/*
* Copyright (c) 2022 Vaughn Nugent
* 
* Library: VNLib
* Package: VNLib.Net.Http
* File: MimeLookups.cs 
*
* MimeLookups.cs is part of VNLib.Net.Http which is part of the larger 
* VNLib collection of libraries and utilities.
*
* VNLib.Net.Http is free software: you can redistribute it and/or modify 
* it under the terms of the GNU Affero General Public License as 
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* VNLib.Net.Http is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program.  If not, see https://www.gnu.org/licenses/.
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace VNLib.Net.Http
{
    public static partial class HttpHelpers
    {
        //Content type lookup dict
        private static readonly IReadOnlyDictionary<ContentType, string> CtToMime = new Dictionary<ContentType, string>()
        {
            { ContentType.NonSupported, "application/octet-stream" },
            { ContentType.UrlEncoded, "application/x-www-form-urlencoded" },
            { ContentType.MultiPart, "multipart/form-data" },
            { ContentType.Aab, "application/x-authorware-bin" },
            { ContentType.Aac, "audio/x-aac" },
            { ContentType.Aam, "application/x-authorware-map" },
            { ContentType.Aas, "application/x-authorware-seg" },
            { ContentType.Abw, "application/x-abiword" },
            { ContentType.Ac, "application/pkix-attr-cert" },
            { ContentType.Acc, "application/vnd.americandynamics.acc" },
            { ContentType.Ace, "application/x-ace-compressed" },
            { ContentType.Acu, "application/vnd.acucobol" },
            { ContentType.Acutc, "application/vnd.acucorp" },
            { ContentType.Adp, "audio/adpcm" },
            { ContentType.Aep, "application/vnd.audiograph" },
            { ContentType.Afm, "application/x-font-type1" },
            { ContentType.Afp, "application/vnd.ibm.modcap" },
            { ContentType.Ahead, "application/vnd.ahead.space" },
            { ContentType.Ai, "application/postscript" },
            { ContentType.Aif, "audio/x-aiff" },
            { ContentType.Aifc, "audio/x-aiff" },
            { ContentType.Aiff, "audio/x-aiff" },
            { ContentType.Air, "application/vnd.adobe.air-application-installer-package+zip" },
            { ContentType.Ait, "application/vnd.dvb.ait" },
            { ContentType.Ami, "application/vnd.amiga.ami" },
            { ContentType.Amr, "audio/amr" },
            { ContentType.Apk, "application/vnd.android.package-archive" },
            { ContentType.Apng, "image/apng" },
            { ContentType.Appcache, "text/cache-manifest" },
            { ContentType.Apr, "application/vnd.lotus-approach" },
            { ContentType.Arc, "application/x-freearc" },
            { ContentType.Arj, "application/x-arj" },
            { ContentType.Asc, "application/pgp-signature" },
            { ContentType.Asf, "video/x-ms-asf" },
            { ContentType.Asm, "text/x-asm" },
            { ContentType.Aso, "application/vnd.accpac.simply.aso" },
            { ContentType.Asx, "video/x-ms-asf" },
            { ContentType.Atc, "application/vnd.acucorp" },
            { ContentType.Atom, "application/atom+xml" },
            { ContentType.Atomcat, "application/atomcat+xml" },
            { ContentType.Atomsvc, "application/atomsvc+xml" },
            { ContentType.Atx, "application/vnd.antix.game-component" },
            { ContentType.Au, "audio/basic" },
            { ContentType.Avi, "video/x-msvideo" },
            { ContentType.Avif, "image/avif" },
            { ContentType.Aw, "application/applixware" },
            { ContentType.Azf, "application/vnd.airzip.filesecure.azf" },
            { ContentType.Azs, "application/vnd.airzip.filesecure.azs" },
            { ContentType.Azv, "image/vnd.airzip.accelerator.azv" },
            { ContentType.Azw, "application/vnd.amazon.ebook" },
            { ContentType.B16, "image/vnd.pco.b16" },
            { ContentType.Bat, "application/x-msdownload" },
            { ContentType.Bcpio, "application/x-bcpio" },
            { ContentType.Bdf, "application/x-font-bdf" },
            { ContentType.Bdm, "application/vnd.syncml.dm+wbxml" },
            { ContentType.Bdoc, "application/bdoc" },
            { ContentType.Bed, "application/vnd.realvnc.bed" },
            { ContentType.Bh2, "application/vnd.fujitsu.oasysprs" },
            { ContentType.Binary, "application/octet-stream" },
            { ContentType.Blb, "application/x-blorb" },
            { ContentType.Blorb, "application/x-blorb" },
            { ContentType.Bmi, "application/vnd.bmi" },
            { ContentType.Bmml, "application/vnd.balsamiq.bmml+xml" },
            { ContentType.Bmp, "image/bmp" },
            { ContentType.Book, "application/vnd.framemaker" },
            { ContentType.Box, "application/vnd.previewsystems.box" },
            { ContentType.Boz, "application/x-bzip2" },
            { ContentType.Bpk, "application/octet-stream" },
            { ContentType.Bsp, "model/vnd.valve.source.compiled-map" },
            { ContentType.Btif, "image/prs.btif" },
            { ContentType.Buffer, "application/octet-stream" },
            { ContentType.Bz, "application/x-bzip" },
            { ContentType.Bz2, "application/x-bzip2" },
            { ContentType.C, "text/x-c" },
            { ContentType.C11amc, "application/vnd.cluetrust.cartomobile-config" },
            { ContentType.C11amz, "application/vnd.cluetrust.cartomobile-config-pkg" },
            { ContentType.C4d, "application/vnd.clonk.c4group" },
            { ContentType.C4f, "application/vnd.clonk.c4group" },
            { ContentType.C4g, "application/vnd.clonk.c4group" },
            { ContentType.C4p, "application/vnd.clonk.c4group" },
            { ContentType.C4u, "application/vnd.clonk.c4group" },
            { ContentType.Cab, "application/vnd.ms-cab-compressed" },
            { ContentType.Caf, "audio/x-caf" },
            { ContentType.Cap, "application/vnd.tcpdump.pcap" },
            { ContentType.Car, "application/vnd.curl.car" },
            { ContentType.Cat, "application/vnd.ms-pki.seccat" },
            { ContentType.Cb7, "application/x-cbr" },
            { ContentType.Cba, "application/x-cbr" },
            { ContentType.Cbr, "application/x-cbr" },
            { ContentType.Cbt, "application/x-cbr" },
            { ContentType.Cbz, "application/x-cbr" },
            { ContentType.Cc, "text/x-c" },
            { ContentType.Cco, "application/x-cocoa" },
            { ContentType.Cct, "application/x-director" },
            { ContentType.Ccxml, "application/ccxml+xml" },
            { ContentType.Cdbcmsg, "application/vnd.contact.cmsg" },
            { ContentType.Cdf, "application/x-netcdf" },
            { ContentType.Cdfx, "application/cdfx+xml" },
            { ContentType.Cdkey, "application/vnd.mediastation.cdkey" },
            { ContentType.Cdmia, "application/cdmi-capability" },
            { ContentType.Cdmic, "application/cdmi-container" },
            { ContentType.Cdmid, "application/cdmi-domain" },
            { ContentType.Cdmio, "application/cdmi-object" },
            { ContentType.Cdmiq, "application/cdmi-queue" },
            { ContentType.Cdx, "chemical/x-cdx" },
            { ContentType.Cdxml, "application/vnd.chemdraw+xml" },
            { ContentType.Cdy, "application/vnd.cinderella" },
            { ContentType.Cer, "application/pkix-cert" },
            { ContentType.Cfs, "application/x-cfs-compressed" },
            { ContentType.Cgm, "image/cgm" },
            { ContentType.Chat, "application/x-chat" },
            { ContentType.Chm, "application/vnd.ms-htmlhelp" },
            { ContentType.Chrt, "application/vnd.kde.kchart" },
            { ContentType.Cif, "chemical/x-cif" },
            { ContentType.Cii, "application/vnd.anser-web-certificate-issue-initiation" },
            { ContentType.Cil, "application/vnd.ms-artgalry" },
            { ContentType.Cjs, "application/node" },
            { ContentType.Cla, "application/vnd.claymore" },
            { ContentType.Clkk, "application/vnd.crick.clicker.keyboard" },
            { ContentType.Clkp, "application/vnd.crick.clicker.palette" },
            { ContentType.Clkt, "application/vnd.crick.clicker.template" },
            { ContentType.Clkw, "application/vnd.crick.clicker.wordbank" },
            { ContentType.Clkx, "application/vnd.crick.clicker" },
            { ContentType.Clp, "application/x-msclip" },
            { ContentType.Cmc, "application/vnd.cosmocaller" },
            { ContentType.Cmdf, "chemical/x-cmdf" },
            { ContentType.Cml, "chemical/x-cml" },
            { ContentType.Cmp, "application/vnd.yellowriver-custom-menu" },
            { ContentType.Cmx, "image/x-cmx" },
            { ContentType.Cod, "application/vnd.rim.cod" },
            { ContentType.Coffee, "text/coffeescript" },
            { ContentType.Com, "application/x-msdownload" },
            { ContentType.Conf, "text/plain" },
            { ContentType.Cpio, "application/x-cpio" },
            { ContentType.Cpp, "text/x-c" },
            { ContentType.Cpt, "application/mac-compactpro" },
            { ContentType.Crd, "application/x-mscardfile" },
            { ContentType.Crl, "application/pkix-crl" },
            { ContentType.Crt, "application/x-x509-ca-cert" },
            { ContentType.Crx, "application/x-chrome-extension" },
            { ContentType.Csh, "application/x-csh" },
            { ContentType.Csl, "application/vnd.citationstyles.style+xml" },
            { ContentType.Csml, "chemical/x-csml" },
            { ContentType.Csp, "application/vnd.commonspace" },
            { ContentType.Css, "text/css" },
            { ContentType.Cst, "application/x-director" },
            { ContentType.Csv, "text/csv" },
            { ContentType.Cu, "application/cu-seeme" },
            { ContentType.Curl, "text/vnd.curl" },
            { ContentType.Cww, "application/prs.cww" },
            { ContentType.Cxt, "application/x-director" },
            { ContentType.Cxx, "text/x-c" },
            { ContentType.Dae, "model/vnd.collada+xml" },
            { ContentType.Daf, "application/vnd.mobius.daf" },
            { ContentType.Dart, "application/vnd.dart" },
            { ContentType.Dataless, "application/vnd.fdsn.seed" },
            { ContentType.Davmount, "application/davmount+xml" },
            { ContentType.Dbf, "application/vnd.dbf" },
            { ContentType.Dbk, "application/docbook+xml" },
            { ContentType.Dcr, "application/x-director" },
            { ContentType.Dcurl, "text/vnd.curl.dcurl" },
            { ContentType.Dd2, "application/vnd.oma.dd2+xml" },
            { ContentType.Ddd, "application/vnd.fujixerox.ddd" },
            { ContentType.Ddf, "application/vnd.syncml.dmddf+xml" },
            { ContentType.Dds, "image/vnd.ms-dds" },
            { ContentType.Deb, "application/octet-stream" },
            { ContentType.Def, "text/plain" },
            { ContentType.Deploy, "application/octet-stream" },
            { ContentType.Der, "application/x-x509-ca-cert" },
            { ContentType.Dfac, "application/vnd.dreamfactory" },
            { ContentType.Dgc, "application/x-dgc-compressed" },
            { ContentType.Dic, "text/x-c" },
            { ContentType.Dir, "application/x-director" },
            { ContentType.Dis, "application/vnd.mobius.dis" },
            { ContentType.Dist, "application/octet-stream" },
            { ContentType.Distz, "application/octet-stream" },
            { ContentType.Djv, "image/vnd.djvu" },
            { ContentType.Djvu, "image/vnd.djvu" },
            { ContentType.Dll, "application/octet-stream" },
            { ContentType.Dmg, "application/octet-stream" },
            { ContentType.Dmp, "application/vnd.tcpdump.pcap" },
            { ContentType.Dms, "application/octet-stream" },
            { ContentType.Dna, "application/vnd.dna" },
            { ContentType.Doc, "application/msword" },
            { ContentType.Docm, "application/vnd.ms-word.document.macroenabled.12" },
            { ContentType.Docx, "application/vnd.openxmlformats-officedocument.wordprocessingml.document" },
            { ContentType.Dot, "application/msword" },
            { ContentType.Dotm, "application/vnd.ms-word.template.macroenabled.12" },
            { ContentType.Dotx, "application/vnd.openxmlformats-officedocument.wordprocessingml.template" },
            { ContentType.Dp, "application/vnd.osgi.dp" },
            { ContentType.Dpg, "application/vnd.dpgraph" },
            { ContentType.Dra, "audio/vnd.dra" },
            { ContentType.Drle, "image/dicom-rle" },
            { ContentType.Dsc, "text/prs.lines.tag" },
            { ContentType.Dssc, "application/dssc+der" },
            { ContentType.Dtb, "application/x-dtbook+xml" },
            { ContentType.Dtd, "application/xml-dtd" },
            { ContentType.Dts, "audio/vnd.dts" },
            { ContentType.Dtshd, "audio/vnd.dts.hd" },
            { ContentType.Dump, "application/octet-stream" },
            { ContentType.Dvb, "video/vnd.dvb.file" },
            { ContentType.Dvi, "application/x-dvi" },
            { ContentType.Dwd, "application/atsc-dwd+xml" },
            { ContentType.Dwf, "model/vnd.dwf" },
            { ContentType.Dwg, "image/vnd.dwg" },
            { ContentType.Dxf, "image/vnd.dxf" },
            { ContentType.Dxp, "application/vnd.spotfire.dxp" },
            { ContentType.Dxr, "application/x-director" },
            { ContentType.Ear, "application/java-archive" },
            { ContentType.Ecma, "application/ecmascript" },
            { ContentType.Edm, "application/vnd.novadigm.edm" },
            { ContentType.Edx, "application/vnd.novadigm.edx" },
            { ContentType.Efif, "application/vnd.picsel" },
            { ContentType.Ei6, "application/vnd.pg.osasli" },
            { ContentType.Elc, "application/octet-stream" },
            { ContentType.Emf, "application/x-msmetafile" },
            { ContentType.Eml, "message/rfc822" },
            { ContentType.Emma, "application/emma+xml" },
            { ContentType.Emz, "application/x-msmetafile" },
            { ContentType.Eol, "audio/vnd.digital-winds" },
            { ContentType.Eot, "application/vnd.ms-fontobject" },
            { ContentType.Eps, "application/postscript" },
            { ContentType.Epub, "application/epub+zip" },
            { ContentType.Es, "application/ecmascript" },
            { ContentType.Es3, "application/vnd.eszigno3+xml" },
            { ContentType.Esa, "application/vnd.osgi.subsystem" },
            { ContentType.Esf, "application/vnd.epson.esf" },
            { ContentType.Et3, "application/vnd.eszigno3+xml" },
            { ContentType.Etx, "text/x-setext" },
            { ContentType.Eva, "application/x-eva" },
            { ContentType.Evy, "application/x-envoy" },
            { ContentType.Exe, "application/octet-stream" },
            { ContentType.Exi, "application/exi" },
            { ContentType.Exp, "application/express" },
            { ContentType.Exr, "image/aces" },
            { ContentType.Ext, "application/vnd.novadigm.ext" },
            { ContentType.Ez, "application/andrew-inset" },
            { ContentType.Ez2, "application/vnd.ezpix-album" },
            { ContentType.Ez3, "application/vnd.ezpix-package" },
            { ContentType.F, "text/x-fortran" },
            { ContentType.F4v, "video/x-f4v" },
            { ContentType.Fortran, "text/x-fortran" },
            { ContentType.F90, "text/x-fortran" },
            { ContentType.Fbs, "image/vnd.fastbidsheet" },
            { ContentType.Fcdt, "application/vnd.adobe.formscentral.fcdt" },
            { ContentType.Fcs, "application/vnd.isac.fcs" },
            { ContentType.Fdf, "application/vnd.fdf" },
            { ContentType.Fdt, "application/fdt+xml" },
            { ContentType.Fg5, "application/vnd.fujitsu.oasysgp" },
            { ContentType.Fgd, "application/x-director" },
            { ContentType.Fh, "image/x-freehand" },
            { ContentType.Fh4, "image/x-freehand" },
            { ContentType.Fh5, "image/x-freehand" },
            { ContentType.Fh7, "image/x-freehand" },
            { ContentType.Fhc, "image/x-freehand" },
            { ContentType.Fig, "application/x-xfig" },
            { ContentType.Fits, "image/fits" },
            { ContentType.Flac, "audio/x-flac" },
            { ContentType.Fli, "video/x-fli" },
            { ContentType.Flo, "application/vnd.micrografx.flo" },
            { ContentType.Flv, "video/x-flv" },
            { ContentType.Flw, "application/vnd.kde.kivio" },
            { ContentType.Flx, "text/vnd.fmi.flexstor" },
            { ContentType.Fly, "text/vnd.fly" },
            { ContentType.Fm, "application/vnd.framemaker" },
            { ContentType.Fnc, "application/vnd.frogans.fnc" },
            { ContentType.Fo, "application/vnd.software602.filler.form+xml" },
            { ContentType.For, "text/x-fortran" },
            { ContentType.Fpx, "image/vnd.fpx" },
            { ContentType.Frame, "application/vnd.framemaker" },
            { ContentType.Fsc, "application/vnd.fsc.weblaunch" },
            { ContentType.Fst, "image/vnd.fst" },
            { ContentType.Ftc, "application/vnd.fluxtime.clip" },
            { ContentType.Fti, "application/vnd.anser-web-funds-transfer-initiation" },
            { ContentType.Fvt, "video/vnd.fvt" },
            { ContentType.Fxp, "application/vnd.adobe.fxp" },
            { ContentType.Fxpl, "application/vnd.adobe.fxp" },
            { ContentType.Fzs, "application/vnd.fuzzysheet" },
            { ContentType.G2w, "application/vnd.geoplan" },
            { ContentType.G3, "image/g3fax" },
            { ContentType.G3w, "application/vnd.geospace" },
            { ContentType.Gac, "application/vnd.groove-account" },
            { ContentType.Gam, "application/x-tads" },
            { ContentType.Gbr, "application/rpki-ghostbusters" },
            { ContentType.Gca, "application/x-gca-compressed" },
            { ContentType.Gdl, "model/vnd.gdl" },
            { ContentType.Gdoc, "application/vnd.google-apps.document" },
            { ContentType.Geo, "application/vnd.dynageo" },
            { ContentType.Geojson, "application/geo+json" },
            { ContentType.Gex, "application/vnd.geometry-explorer" },
            { ContentType.Ggb, "application/vnd.geogebra.file" },
            { ContentType.Ggt, "application/vnd.geogebra.tool" },
            { ContentType.Ghf, "application/vnd.groove-help" },
            { ContentType.Gif, "image/gif" },
            { ContentType.Gim, "application/vnd.groove-identity-message" },
            { ContentType.Glb, "model/gltf-binary" },
            { ContentType.Gltf, "model/gltf+json" },
            { ContentType.Gml, "application/gml+xml" },
            { ContentType.Gmx, "application/vnd.gmx" },
            { ContentType.Gnumeric, "application/x-gnumeric" },
            { ContentType.Gph, "application/vnd.flographit" },
            { ContentType.Gpx, "application/gpx+xml" },
            { ContentType.Gqf, "application/vnd.grafeq" },
            { ContentType.Gqs, "application/vnd.grafeq" },
            { ContentType.Gram, "application/srgs" },
            { ContentType.Gramps, "application/x-gramps-xml" },
            { ContentType.Gre, "application/vnd.geometry-explorer" },
            { ContentType.Grv, "application/vnd.groove-injector" },
            { ContentType.Grxml, "application/srgs+xml" },
            { ContentType.Gsf, "application/x-font-ghostscript" },
            { ContentType.Gsheet, "application/vnd.google-apps.spreadsheet" },
            { ContentType.Gslides, "application/vnd.google-apps.presentation" },
            { ContentType.Gtar, "application/x-gtar" },
            { ContentType.Gtm, "application/vnd.groove-tool-message" },
            { ContentType.Gtw, "model/vnd.gtw" },
            { ContentType.Gv, "text/vnd.graphviz" },
            { ContentType.Gxf, "application/gxf" },
            { ContentType.Gxt, "application/vnd.geonext" },
            { ContentType.Gz, "application/gzip" },
            { ContentType.H, "text/x-c" },
            { ContentType.H261, "video/h261" },
            { ContentType.H263, "video/h263" },
            { ContentType.H264, "video/h264" },
            { ContentType.Hal, "application/vnd.hal+xml" },
            { ContentType.Hbci, "application/vnd.hbci" },
            { ContentType.Hbs, "text/x-handlebars-template" },
            { ContentType.Hdd, "application/x-virtualbox-hdd" },
            { ContentType.Hdf, "application/x-hdf" },
            { ContentType.Heic, "image/heic" },
            { ContentType.Heics, "image/heic-sequence" },
            { ContentType.Heif, "image/heif" },
            { ContentType.Heifs, "image/heif-sequence" },
            { ContentType.Hej2, "image/hej2k" },
            { ContentType.Held, "application/atsc-held+xml" },
            { ContentType.Hh, "text/x-c" },
            { ContentType.Hjson, "application/hjson" },
            { ContentType.Hlp, "application/winhlp" },
            { ContentType.Hpgl, "application/vnd.hp-hpgl" },
            { ContentType.Hpid, "application/vnd.hp-hpid" },
            { ContentType.Hps, "application/vnd.hp-hps" },
            { ContentType.Hqx, "application/mac-binhex40" },
            { ContentType.Hsj2, "image/hsj2" },
            { ContentType.Htc, "text/x-component" },
            { ContentType.Htke, "application/vnd.kenameaapp" },
            { ContentType.Htm, "text/html" },
            { ContentType.Html, "text/html" },
            { ContentType.Hvd, "application/vnd.yamaha.hv-dic" },
            { ContentType.Hvp, "application/vnd.yamaha.hv-voice" },
            { ContentType.Hvs, "application/vnd.yamaha.hv-script" },
            { ContentType.I2g, "application/vnd.intergeo" },
            { ContentType.Icc, "application/vnd.iccprofile" },
            { ContentType.Ice, "x-conference/x-cooltalk" },
            { ContentType.Icm, "application/vnd.iccprofile" },
            { ContentType.Ico, "image/vnd.microsoft.icon" },
            { ContentType.Ics, "text/calendar" },
            { ContentType.Ief, "image/ief" },
            { ContentType.Ifb, "text/calendar" },
            { ContentType.Ifm, "application/vnd.shana.informed.formdata" },
            { ContentType.Iges, "model/iges" },
            { ContentType.Igl, "application/vnd.igloader" },
            { ContentType.Igm, "application/vnd.insors.igm" },
            { ContentType.Igs, "model/iges" },
            { ContentType.Igx, "application/vnd.micrografx.igx" },
            { ContentType.Iif, "application/vnd.shana.informed.interchange" },
            { ContentType.Img, "application/octet-stream" },
            { ContentType.Imp, "application/vnd.accpac.simply.imp" },
            { ContentType.Ims, "application/vnd.ms-ims" },
            { ContentType.Ini, "text/plain" },
            { ContentType.Ink, "application/inkml+xml" },
            { ContentType.Inkml, "application/inkml+xml" },
            { ContentType.Install, "application/x-install-instructions" },
            { ContentType.Iota, "application/vnd.astraea-software.iota" },
            { ContentType.Ipfix, "application/ipfix" },
            { ContentType.Ipk, "application/vnd.shana.informed.package" },
            { ContentType.Irm, "application/vnd.ibm.rights-management" },
            { ContentType.Irp, "application/vnd.irepository.package+xml" },
            { ContentType.Iso, "application/octet-stream" },
            { ContentType.Itp, "application/vnd.shana.informed.formtemplate" },
            { ContentType.Its, "application/its+xml" },
            { ContentType.Ivp, "application/vnd.immervision-ivp" },
            { ContentType.Ivu, "application/vnd.immervision-ivu" },
            { ContentType.Jad, "text/vnd.sun.j2me.app-descriptor" },
            { ContentType.Jade, "text/jade" },
            { ContentType.Jam, "application/vnd.jam" },
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            { ContentType.Rtx, "text/richtext" },
            { ContentType.Run, "application/x-makeself" },
            { ContentType.Rusd, "application/route-usd+xml" },
            { ContentType.S, "text/x-asm" },
            { ContentType.S3m, "audio/s3m" },
            { ContentType.Saf, "application/vnd.yamaha.smaf-audio" },
            { ContentType.Sass, "text/x-sass" },
            { ContentType.Sbml, "application/sbml+xml" },
            { ContentType.Sc, "application/vnd.ibm.secure-container" },
            { ContentType.Scd, "application/x-msschedule" },
            { ContentType.Scm, "application/vnd.lotus-screencam" },
            { ContentType.Scq, "application/scvp-cv-request" },
            { ContentType.Scs, "application/scvp-cv-response" },
            { ContentType.Scss, "text/x-scss" },
            { ContentType.Scurl, "text/vnd.curl.scurl" },
            { ContentType.Sda, "application/vnd.stardivision.draw" },
            { ContentType.Sdc, "application/vnd.stardivision.calc" },
            { ContentType.Sdd, "application/vnd.stardivision.impress" },
            { ContentType.Sdkd, "application/vnd.solent.sdkm+xml" },
            { ContentType.Sdkm, "application/vnd.solent.sdkm+xml" },
            { ContentType.Sdp, "application/sdp" },
            { ContentType.Sdw, "application/vnd.stardivision.writer" },
            { ContentType.Sea, "application/x-sea" },
            { ContentType.See, "application/vnd.seemail" },
            { ContentType.Seed, "application/vnd.fdsn.seed" },
            { ContentType.Sema, "application/vnd.sema" },
            { ContentType.Semd, "application/vnd.semd" },
            { ContentType.Semf, "application/vnd.semf" },
            { ContentType.Senmlx, "application/senml+xml" },
            { ContentType.Sensmlx, "application/sensml+xml" },
            { ContentType.Ser, "application/java-serialized-object" },
            { ContentType.Setpay, "application/set-payment-initiation" },
            { ContentType.Setreg, "application/set-registration-initiation" },
            { ContentType.Sfs, "application/vnd.spotfire.sfs" },
            { ContentType.Sfv, "text/x-sfv" },
            { ContentType.Sgi, "image/sgi" },
            { ContentType.Sgl, "application/vnd.stardivision.writer-global" },
            { ContentType.Sgm, "text/sgml" },
            { ContentType.Sgml, "text/sgml" },
            { ContentType.Sh, "application/x-sh" },
            { ContentType.Shar, "application/x-shar" },
            { ContentType.Shex, "text/shex" },
            { ContentType.Shf, "application/shf+xml" },
            { ContentType.Shtml, "text/html" },
            { ContentType.Sid, "image/x-mrsid-image" },
            { ContentType.Sieve, "application/sieve" },
            { ContentType.Sig, "application/pgp-signature" },
            { ContentType.Sil, "audio/silk" },
            { ContentType.Silo, "model/mesh" },
            { ContentType.Sis, "application/vnd.symbian.install" },
            { ContentType.Sisx, "application/vnd.symbian.install" },
            { ContentType.Sit, "application/x-stuffit" },
            { ContentType.Sitx, "application/x-stuffitx" },
            { ContentType.Siv, "application/sieve" },
            { ContentType.Skd, "application/vnd.koan" },
            { ContentType.Skm, "application/vnd.koan" },
            { ContentType.Skp, "application/vnd.koan" },
            { ContentType.Skt, "application/vnd.koan" },
            { ContentType.Sldm, "application/vnd.ms-powerpoint.slide.macroenabled.12" },
            { ContentType.Sldx, "application/vnd.openxmlformats-officedocument.presentationml.slide" },
            { ContentType.Slim, "text/slim" },
            { ContentType.Slm, "text/slim" },
            { ContentType.Sls, "application/route-s-tsid+xml" },
            { ContentType.Slt, "application/vnd.epson.salt" },
            { ContentType.Sm, "application/vnd.stepmania.stepchart" },
            { ContentType.Smf, "application/vnd.stardivision.math" },
            { ContentType.Smi, "application/smil+xml" },
            { ContentType.Smil, "application/smil+xml" },
            { ContentType.Smv, "video/x-smv" },
            { ContentType.Smzip, "application/vnd.stepmania.package" },
            { ContentType.Snd, "audio/basic" },
            { ContentType.Snf, "application/x-font-snf" },
            { ContentType.So, "application/octet-stream" },
            { ContentType.Spc, "application/x-pkcs7-certificates" },
            { ContentType.Spdx, "text/spdx" },
            { ContentType.Spf, "application/vnd.yamaha.smaf-phrase" },
            { ContentType.Spl, "application/x-futuresplash" },
            { ContentType.Spot, "text/vnd.in3d.spot" },
            { ContentType.Spp, "application/scvp-vp-response" },
            { ContentType.Spq, "application/scvp-vp-request" },
            { ContentType.Spx, "audio/ogg" },
            { ContentType.Sql, "application/x-sql" },
            { ContentType.Src, "application/x-wais-source" },
            { ContentType.Srt, "application/x-subrip" },
            { ContentType.Sru, "application/sru+xml" },
            { ContentType.Srx, "application/sparql-results+xml" },
            { ContentType.Ssdl, "application/ssdl+xml" },
            { ContentType.Sse, "application/vnd.kodak-descriptor" },
            { ContentType.Ssf, "application/vnd.epson.ssf" },
            { ContentType.Ssml, "application/ssml+xml" },
            { ContentType.St, "application/vnd.sailingtracker.track" },
            { ContentType.Stc, "application/vnd.sun.xml.calc.template" },
            { ContentType.Std, "application/vnd.sun.xml.draw.template" },
            { ContentType.Stf, "application/vnd.wt.stf" },
            { ContentType.Sti, "application/vnd.sun.xml.impress.template" },
            { ContentType.Stk, "application/hyperstudio" },
            { ContentType.Stl, "application/vnd.ms-pki.stl" },
            { ContentType.Stpx, "model/step+xml" },
            { ContentType.Stpxz, "model/step-xml+zip" },
            { ContentType.Stpz, "model/step+zip" },
            { ContentType.Str, "application/vnd.pg.format" },
            { ContentType.Stw, "application/vnd.sun.xml.writer.template" },
            { ContentType.Styl, "text/stylus" },
            { ContentType.Stylus, "text/stylus" },
            { ContentType.Sub, "image/vnd.dvb.subtitle" },
            { ContentType.Sus, "application/vnd.sus-calendar" },
            { ContentType.Susp, "application/vnd.sus-calendar" },
            { ContentType.Sv4cpio, "application/x-sv4cpio" },
            { ContentType.Sv4crc, "application/x-sv4crc" },
            { ContentType.Svc, "application/vnd.dvb.service" },
            { ContentType.Svd, "application/vnd.svd" },
            { ContentType.Svg, "image/svg+xml" },
            { ContentType.Svgz, "image/svg+xml" },
            { ContentType.Swa, "application/x-director" },
            { ContentType.Swf, "application/x-shockwave-flash" },
            { ContentType.Swi, "application/vnd.aristanetworks.swi" },
            { ContentType.Swidtag, "application/swid+xml" },
            { ContentType.Sxc, "application/vnd.sun.xml.calc" },
            { ContentType.Sxd, "application/vnd.sun.xml.draw" },
            { ContentType.Sxg, "application/vnd.sun.xml.writer.global" },
            { ContentType.Sxi, "application/vnd.sun.xml.impress" },
            { ContentType.Sxm, "application/vnd.sun.xml.math" },
            { ContentType.Sxw, "application/vnd.sun.xml.writer" },
            { ContentType.T, "text/troff" },
            { ContentType.T3, "application/x-t3vm-image" },
            { ContentType.T38, "image/t38" },
            { ContentType.Taglet, "application/vnd.mynfc" },
            { ContentType.Tao, "application/vnd.tao.intent-module-archive" },
            { ContentType.Tap, "image/vnd.tencent.tap" },
            { ContentType.Tar, "application/x-tar" },
            { ContentType.Tcap, "application/vnd.3gpp2.tcap" },
            { ContentType.Tcl, "application/x-tcl" },
            { ContentType.Td, "application/urc-targetdesc+xml" },
            { ContentType.Teacher, "application/vnd.smart.teacher" },
            { ContentType.Tei, "application/tei+xml" },
            { ContentType.Tex, "application/x-tex" },
            { ContentType.Texi, "application/x-texinfo" },
            { ContentType.Texinfo, "application/x-texinfo" },
            { ContentType.Text, "text/plain" },
            { ContentType.Tfi, "application/thraud+xml" },
            { ContentType.Tfm, "application/x-tex-tfm" },
            { ContentType.Tfx, "image/tiff-fx" },
            { ContentType.Tga, "image/x-tga" },
            { ContentType.Thmx, "application/vnd.ms-officetheme" },
            { ContentType.Tif, "image/tiff" },
            { ContentType.Tiff, "image/tiff" },
            { ContentType.Tk, "application/x-tcl" },
            { ContentType.Tmo, "application/vnd.tmobile-livetv" },
            { ContentType.Toml, "application/toml" },
            { ContentType.Torrent, "application/x-bittorrent" },
            { ContentType.Tpl, "application/vnd.groove-tool-template" },
            { ContentType.Tpt, "application/vnd.trid.tpt" },
            { ContentType.Tr, "text/troff" },
            { ContentType.Tra, "application/vnd.trueapp" },
            { ContentType.Trig, "application/trig" },
            { ContentType.Trm, "application/x-msterminal" },
            { ContentType.Ts, "video/mp2t" },
            { ContentType.Tsd, "application/timestamped-data" },
            { ContentType.Tsv, "text/tab-separated-values" },
            { ContentType.Ttc, "font/collection" },
            { ContentType.Ttf, "font/ttf" },
            { ContentType.Ttl, "text/turtle" },
            { ContentType.Ttml, "application/ttml+xml" },
            { ContentType.Twd, "application/vnd.simtech-mindmapper" },
            { ContentType.Twds, "application/vnd.simtech-mindmapper" },
            { ContentType.Txd, "application/vnd.genomatix.tuxedo" },
            { ContentType.Txf, "application/vnd.mobius.txf" },
            { ContentType.Txt, "text/plain" },
            { ContentType.U32, "application/x-authorware-bin" },
            { ContentType.U8dsn, "message/global-delivery-status" },
            { ContentType.U8hdr, "message/global-headers" },
            { ContentType.U8mdn, "message/global-disposition-notification" },
            { ContentType.U8msg, "message/global" },
            { ContentType.Ubj, "application/ubjson" },
            { ContentType.Udeb, "application/x-debian-package" },
            { ContentType.Ufd, "application/vnd.ufdl" },
            { ContentType.Ufdl, "application/vnd.ufdl" },
            { ContentType.Ulx, "application/x-glulx" },
            { ContentType.Umj, "application/vnd.umajin" },
            { ContentType.Unityweb, "application/vnd.unity" },
            { ContentType.Uoml, "application/vnd.uoml+xml" },
            { ContentType.Uri, "text/uri-list" },
            { ContentType.Uris, "text/uri-list" },
            { ContentType.Urls, "text/uri-list" },
            { ContentType.Usdz, "model/vnd.usdz+zip" },
            { ContentType.Ustar, "application/x-ustar" },
            { ContentType.Utz, "application/vnd.uiq.theme" },
            { ContentType.Uu, "text/x-uuencode" },
            { ContentType.Uva, "audio/vnd.dece.audio" },
            { ContentType.Uvd, "application/vnd.dece.data" },
            { ContentType.Uvf, "application/vnd.dece.data" },
            { ContentType.Uvg, "image/vnd.dece.graphic" },
            { ContentType.Uvh, "video/vnd.dece.hd" },
            { ContentType.Uvi, "image/vnd.dece.graphic" },
            { ContentType.Uvm, "video/vnd.dece.mobile" },
            { ContentType.Uvp, "video/vnd.dece.pd" },
            { ContentType.Uvs, "video/vnd.dece.sd" },
            { ContentType.Uvt, "application/vnd.dece.ttml+xml" },
            { ContentType.Uvu, "video/vnd.uvvu.mp4" },
            { ContentType.Uvv, "video/vnd.dece.video" },
            { ContentType.Uvva, "audio/vnd.dece.audio" },
            { ContentType.Uvvd, "application/vnd.dece.data" },
            { ContentType.Uvvf, "application/vnd.dece.data" },
            { ContentType.Uvvg, "image/vnd.dece.graphic" },
            { ContentType.Uvvh, "video/vnd.dece.hd" },
            { ContentType.Uvvi, "image/vnd.dece.graphic" },
            { ContentType.Uvvm, "video/vnd.dece.mobile" },
            { ContentType.Uvvp, "video/vnd.dece.pd" },
            { ContentType.Uvvs, "video/vnd.dece.sd" },
            { ContentType.Uvvt, "application/vnd.dece.ttml+xml" },
            { ContentType.Uvvu, "video/vnd.uvvu.mp4" },
            { ContentType.Uvvv, "video/vnd.dece.video" },
            { ContentType.Uvvx, "application/vnd.dece.unspecified" },
            { ContentType.Uvvz, "application/vnd.dece.zip" },
            { ContentType.Uvx, "application/vnd.dece.unspecified" },
            { ContentType.Uvz, "application/vnd.dece.zip" },
            { ContentType.Vbox, "application/x-virtualbox-vbox" },
            { ContentType.Vcard, "text/vcard" },
            { ContentType.Vcd, "application/x-cdlink" },
            { ContentType.Vcf, "text/x-vcard" },
            { ContentType.Vcg, "application/vnd.groove-vcard" },
            { ContentType.Vcs, "text/x-vcalendar" },
            { ContentType.Vcx, "application/vnd.vcx" },
            { ContentType.Vdi, "application/x-virtualbox-vdi" },
            { ContentType.Vds, "model/vnd.sap.vds" },
            { ContentType.Vhd, "application/x-virtualbox-vhd" },
            { ContentType.Vis, "application/vnd.visionary" },
            { ContentType.Viv, "video/vnd.vivo" },
            { ContentType.Vmdk, "application/x-virtualbox-vmdk" },
            { ContentType.Vob, "video/x-ms-vob" },
            { ContentType.Vor, "application/vnd.stardivision.writer" },
            { ContentType.Vox, "application/x-authorware-bin" },
            { ContentType.Vrml, "model/vrml" },
            { ContentType.Vsd, "application/vnd.visio" },
            { ContentType.Vsf, "application/vnd.vsf" },
            { ContentType.Vss, "application/vnd.visio" },
            { ContentType.Vst, "application/vnd.visio" },
            { ContentType.Vsw, "application/vnd.visio" },
            { ContentType.Vtf, "image/vnd.valve.source.texture" },
            { ContentType.Vtt, "text/vtt" },
            { ContentType.Vtu, "model/vnd.vtu" },
            { ContentType.Vxml, "application/voicexml+xml" },
            { ContentType.W3d, "application/x-director" },
            { ContentType.Wad, "application/x-doom" },
            { ContentType.Wadl, "application/vnd.sun.wadl+xml" },
            { ContentType.War, "application/java-archive" },
            { ContentType.Wasm, "application/wasm" },
            { ContentType.Wav, "audio/wav" },
            { ContentType.Wax, "audio/x-ms-wax" },
            { ContentType.Wbmp, "image/vnd.wap.wbmp" },
            { ContentType.Wbs, "application/vnd.criticaltools.wbs+xml" },
            { ContentType.Wbxml, "application/vnd.wap.wbxml" },
            { ContentType.Wcm, "application/vnd.ms-works" },
            { ContentType.Wdb, "application/vnd.ms-works" },
            { ContentType.Wdp, "image/vnd.ms-photo" },
            { ContentType.Weba, "audio/webm" },
            { ContentType.Webapp, "application/x-web-app-manifest+json" },
            { ContentType.Webm, "video/webm" },
            { ContentType.Webp, "image/webp" },
            { ContentType.Wg, "application/vnd.pmi.widget" },
            { ContentType.Wgt, "application/widget" },
            { ContentType.Wks, "application/vnd.ms-works" },
            { ContentType.Wm, "video/x-ms-wm" },
            { ContentType.Wma, "audio/x-ms-wma" },
            { ContentType.Wmd, "application/x-ms-wmd" },
            { ContentType.Wmf, "application/x-msmetafile" },
            { ContentType.Wml, "text/vnd.wap.wml" },
            { ContentType.Wmlc, "application/vnd.wap.wmlc" },
            { ContentType.Wmls, "text/vnd.wap.wmlscript" },
            { ContentType.Wmlsc, "application/vnd.wap.wmlscriptc" },
            { ContentType.Wmv, "video/x-ms-wmv" },
            { ContentType.Wmx, "video/x-ms-wmx" },
            { ContentType.Wmz, "application/x-ms-wmz" },
            { ContentType.Woff, "font/woff" },
            { ContentType.Woff2, "font/woff2" },
            { ContentType.Wpd, "application/vnd.wordperfect" },
            { ContentType.Wpl, "application/vnd.ms-wpl" },
            { ContentType.Wps, "application/vnd.ms-works" },
            { ContentType.Wqd, "application/vnd.wqd" },
            { ContentType.Wri, "application/x-mswrite" },
            { ContentType.Wrl, "model/vrml" },
            { ContentType.Wsc, "message/vnd.wfa.wsc" },
            { ContentType.Wsdl, "application/wsdl+xml" },
            { ContentType.Wspolicy, "application/wspolicy+xml" },
            { ContentType.Wtb, "application/vnd.webturbo" },
            { ContentType.Wvx, "video/x-ms-wvx" },
            { ContentType.X32, "application/x-authorware-bin" },
            { ContentType.X3d, "model/x3d+xml" },
            { ContentType.X3db, "model/x3d+binary" },
            { ContentType.X3dbz, "model/x3d+binary" },
            { ContentType.X3dv, "model/x3d+vrml" },
            { ContentType.X3dvz, "model/x3d+vrml" },
            { ContentType.X3dz, "model/x3d+xml" },
            { ContentType.Xaml, "application/xaml+xml" },
            { ContentType.Xap, "application/x-silverlight-app" },
            { ContentType.Xar, "application/vnd.xara" },
            { ContentType.Xav, "application/xcap-att+xml" },
            { ContentType.Xbap, "application/x-ms-xbap" },
            { ContentType.Xbd, "application/vnd.fujixerox.docuworks.binder" },
            { ContentType.Xbm, "image/x-xbitmap" },
            { ContentType.Xca, "application/xcap-caps+xml" },
            { ContentType.Xcs, "application/calendar+xml" },
            { ContentType.Xdf, "application/xcap-diff+xml" },
            { ContentType.Xdm, "application/vnd.syncml.dm+xml" },
            { ContentType.Xdp, "application/vnd.adobe.xdp+xml" },
            { ContentType.Xdssc, "application/dssc+xml" },
            { ContentType.Xdw, "application/vnd.fujixerox.docuworks" },
            { ContentType.Xel, "application/xcap-el+xml" },
            { ContentType.Xenc, "application/xenc+xml" },
            { ContentType.Xer, "application/patch-ops-error+xml" },
            { ContentType.Xfdf, "application/vnd.adobe.xfdf" },
            { ContentType.Xfdl, "application/vnd.xfdl" },
            { ContentType.Xht, "application/xhtml+xml" },
            { ContentType.Xhtml, "application/xhtml+xml" },
            { ContentType.Xhvml, "application/xv+xml" },
            { ContentType.Xif, "image/vnd.xiff" },
            { ContentType.Xla, "application/vnd.ms-excel" },
            { ContentType.Xlam, "application/vnd.ms-excel.addin.macroenabled.12" },
            { ContentType.Xlc, "application/vnd.ms-excel" },
            { ContentType.Xlf, "application/x-xliff+xml" },
            { ContentType.Xlm, "application/vnd.ms-excel" },
            { ContentType.Xls, "application/vnd.ms-excel" },
            { ContentType.Xlsb, "application/vnd.ms-excel.sheet.binary.macroenabled.12" },
            { ContentType.Xlsm, "application/vnd.ms-excel.sheet.macroenabled.12" },
            { ContentType.Xlsx, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" },
            { ContentType.Xlt, "application/vnd.ms-excel" },
            { ContentType.Xltm, "application/vnd.ms-excel.template.macroenabled.12" },
            { ContentType.Xltx, "application/vnd.openxmlformats-officedocument.spreadsheetml.template" },
            { ContentType.Xlw, "application/vnd.ms-excel" },
            { ContentType.Xm, "audio/xm" },
            { ContentType.Xml, "application/xml" },
            { ContentType.Xns, "application/xcap-ns+xml" },
            { ContentType.Xo, "application/vnd.olpc-sugar" },
            { ContentType.Xop, "application/xop+xml" },
            { ContentType.Xpi, "application/x-xpinstall" },
            { ContentType.Xpl, "application/xproc+xml" },
            { ContentType.Xpm, "image/x-xpixmap" },
            { ContentType.Xpr, "application/vnd.is-xpr" },
            { ContentType.Xps, "application/vnd.ms-xpsdocument" },
            { ContentType.Xpw, "application/vnd.intercon.formnet" },
            { ContentType.Xpx, "application/vnd.intercon.formnet" },
            { ContentType.Xsd, "application/xml" },
            { ContentType.Xsl, "application/xml" },
            { ContentType.Xslt, "application/xslt+xml" },
            { ContentType.Xsm, "application/vnd.syncml+xml" },
            { ContentType.Xspf, "application/xspf+xml" },
            { ContentType.Xul, "application/vnd.mozilla.xul+xml" },
            { ContentType.Xvm, "application/xv+xml" },
            { ContentType.Xvml, "application/xv+xml" },
            { ContentType.Xwd, "image/x-xwindowdump" },
            { ContentType.Xyz, "chemical/x-xyz" },
            { ContentType.Xz, "application/x-xz" },
            { ContentType.Yaml, "text/yaml" },
            { ContentType.Yang, "application/yang" },
            { ContentType.Yin, "application/yin+xml" },
            { ContentType.Yml, "text/yaml" },
            { ContentType.Ymp, "text/x-suse-ymp" },
            { ContentType.Z1, "application/x-zmachine" },
            { ContentType.Z2, "application/x-zmachine" },
            { ContentType.Z3, "application/x-zmachine" },
            { ContentType.Z4, "application/x-zmachine" },
            { ContentType.Z5, "application/x-zmachine" },
            { ContentType.Z6, "application/x-zmachine" },
            { ContentType.Z7, "application/x-zmachine" },
            { ContentType.Z8, "application/x-zmachine" },
            { ContentType.Zaz, "application/vnd.zzazz.deck+xml" },
            { ContentType.Zip, "application/zip" },
            { ContentType.Zir, "application/vnd.zul" },
            { ContentType.Zirz, "application/vnd.zul" },
            { ContentType.Zmm, "application/vnd.handheld-entertainment+xml" },
        };
        private static readonly IReadOnlyDictionary<string, ContentType> ExtensionToCt = new Dictionary<string, ContentType>()
        {
            { "aab", ContentType.Aab },
            { "aac", ContentType.Aac },
            { "aam", ContentType.Aam },
            { "aas", ContentType.Aas },
            { "abw", ContentType.Abw },
            { "ac", ContentType.Ac },
            { "acc", ContentType.Acc },
            { "ace", ContentType.Ace },
            { "acu", ContentType.Acu },
            { "acutc", ContentType.Acutc },
            { "adp", ContentType.Adp },
            { "aep", ContentType.Aep },
            { "afm", ContentType.Afm },
            { "afp", ContentType.Afp },
            { "ahead", ContentType.Ahead },
            { "ai", ContentType.Ai },
            { "aif", ContentType.Aif },
            { "aifc", ContentType.Aifc },
            { "aiff", ContentType.Aiff },
            { "air", ContentType.Air },
            { "ait", ContentType.Ait },
            { "ami", ContentType.Ami },
            { "amr", ContentType.Amr },
            { "apk", ContentType.Apk },
            { "apng", ContentType.Apng },
            { "appcache", ContentType.Appcache },
            { "apr", ContentType.Apr },
            { "arc", ContentType.Arc },
            { "arj", ContentType.Arj },
            { "asc", ContentType.Asc },
            { "asf", ContentType.Asf },
            { "asm", ContentType.Asm },
            { "aso", ContentType.Aso },
            { "asx", ContentType.Asx },
            { "atc", ContentType.Atc },
            { "atom", ContentType.Atom },
            { "atomcat", ContentType.Atomcat },
            { "atomsvc", ContentType.Atomsvc },
            { "atx", ContentType.Atx },
            { "au", ContentType.Au },
            { "avi", ContentType.Avi },
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            { "onetmp", ContentType.Onetmp },
            { "onetoc", ContentType.Onetoc },
            { "onetoc2", ContentType.Onetoc2 },
            { "opf", ContentType.Opf },
            { "opml", ContentType.Opml },
            { "oprc", ContentType.Oprc },
            { "opus", ContentType.Opus },
            { "org", ContentType.Org },
            { "osf", ContentType.Osf },
            { "osfpvg", ContentType.Osfpvg },
            { "osm", ContentType.Osm },
            { "otc", ContentType.Otc },
            { "otf", ContentType.Otf },
            { "otg", ContentType.Otg },
            { "oth", ContentType.Oth },
            { "oti", ContentType.Oti },
            { "otp", ContentType.Otp },
            { "ots", ContentType.Ots },
            { "ott", ContentType.Ott },
            { "ova", ContentType.Ova },
            { "ovf", ContentType.Ovf },
            { "owl", ContentType.Owl },
            { "oxps", ContentType.Oxps },
            { "oxt", ContentType.Oxt },
            { "p", ContentType.P },
            { "p10", ContentType.P10 },
            { "p12", ContentType.P12 },
            { "p7b", ContentType.P7b },
            { "p7c", ContentType.P7c },
            { "p7m", ContentType.P7m },
            { "p7r", ContentType.P7r },
            { "p7s", ContentType.P7s },
            { "p8", ContentType.P8 },
            { "pac", ContentType.Pac },
            { "pages", ContentType.Pages },
            { "pas", ContentType.Pas },
            { "paw", ContentType.Paw },
            { "pbd", ContentType.Pbd },
            { "pbm", ContentType.Pbm },
            { "pcap", ContentType.Pcap },
            { "pcf", ContentType.Pcf },
            { "pcl", ContentType.Pcl },
            { "pclxl", ContentType.Pclxl },
            { "pct", ContentType.Pct },
            { "pcurl", ContentType.Pcurl },
            { "pcx", ContentType.Pcx },
            { "pdb", ContentType.Pdb },
            { "pde", ContentType.Pde },
            { "pdf", ContentType.Pdf },
            { "pem", ContentType.Pem },
            { "pfa", ContentType.Pfa },
            { "pfb", ContentType.Pfb },
            { "pfm", ContentType.Pfm },
            { "pfr", ContentType.Pfr },
            { "pfx", ContentType.Pfx },
            { "pgm", ContentType.Pgm },
            { "pgn", ContentType.Pgn },
            { "pgp", ContentType.Pgp },
            { "php", ContentType.Php },
            { "pic", ContentType.Pic },
            { "pkg", ContentType.Pkg },
            { "pki", ContentType.Pki },
            { "pkipath", ContentType.Pkipath },
            { "pkpass", ContentType.Pkpass },
            { "pl", ContentType.Pl },
            { "plb", ContentType.Plb },
            { "plc", ContentType.Plc },
            { "plf", ContentType.Plf },
            { "pls", ContentType.Pls },
            { "pm", ContentType.Pm },
            { "pml", ContentType.Pml },
            { "png", ContentType.Png },
            { "pnm", ContentType.Pnm },
            { "portpkg", ContentType.Portpkg },
            { "pot", ContentType.Pot },
            { "potm", ContentType.Potm },
            { "potx", ContentType.Potx },
            { "ppam", ContentType.Ppam },
            { "ppd", ContentType.Ppd },
            { "ppm", ContentType.Ppm },
            { "pps", ContentType.Pps },
            { "ppsm", ContentType.Ppsm },
            { "ppsx", ContentType.Ppsx },
            { "ppt", ContentType.Ppt },
            { "pptm", ContentType.Pptm },
            { "pptx", ContentType.Pptx },
            { "pqa", ContentType.Pqa },
            { "prc", ContentType.Prc },
            { "pre", ContentType.Pre },
            { "prf", ContentType.Prf },
            { "provx", ContentType.Provx },
            { "ps", ContentType.Ps },
            { "psb", ContentType.Psb },
            { "psd", ContentType.Psd },
            { "psf", ContentType.Psf },
            { "pskcxml", ContentType.Pskcxml },
            { "pti", ContentType.Pti },
            { "ptid", ContentType.Ptid },
            { "pub", ContentType.Pub },
            { "pvb", ContentType.Pvb },
            { "pwn", ContentType.Pwn },
            { "pya", ContentType.Pya },
            { "pyv", ContentType.Pyv },
            { "qam", ContentType.Qam },
            { "qbo", ContentType.Qbo },
            { "qfx", ContentType.Qfx },
            { "qps", ContentType.Qps },
            { "qt", ContentType.Qt },
            { "qwd", ContentType.Qwd },
            { "qwt", ContentType.Qwt },
            { "qxb", ContentType.Qxb },
            { "qxd", ContentType.Qxd },
            { "qxl", ContentType.Qxl },
            { "qxt", ContentType.Qxt },
            { "ra", ContentType.Ra },
            { "ram", ContentType.Ram },
            { "raml", ContentType.Raml },
            { "rapd", ContentType.Rapd },
            { "rar", ContentType.Rar },
            { "ras", ContentType.Ras },
            { "rdf", ContentType.Rdf },
            { "rdz", ContentType.Rdz },
            { "relo", ContentType.Relo },
            { "rep", ContentType.Rep },
            { "res", ContentType.Res },
            { "rgb", ContentType.Rgb },
            { "rif", ContentType.Rif },
            { "rip", ContentType.Rip },
            { "ris", ContentType.Ris },
            { "rl", ContentType.Rl },
            { "rlc", ContentType.Rlc },
            { "rld", ContentType.Rld },
            { "rm", ContentType.Rm },
            { "rmi", ContentType.Rmi },
            { "rmp", ContentType.Rmp },
            { "rms", ContentType.Rms },
            { "rmvb", ContentType.Rmvb },
            { "rnc", ContentType.Rnc },
            { "rng", ContentType.Rng },
            { "roa", ContentType.Roa },
            { "roff", ContentType.Roff },
            { "rp9", ContentType.Rp9 },
            { "rpm", ContentType.Rpm },
            { "rpss", ContentType.Rpss },
            { "rpst", ContentType.Rpst },
            { "rq", ContentType.Rq },
            { "rs", ContentType.Rs },
            { "rsat", ContentType.Rsat },
            { "rsd", ContentType.Rsd },
            { "rsheet", ContentType.Rsheet },
            { "rss", ContentType.Rss },
            { "rtf", ContentType.Rtf },
            { "rtx", ContentType.Rtx },
            { "run", ContentType.Run },
            { "rusd", ContentType.Rusd },
            { "s", ContentType.S },
            { "s3m", ContentType.S3m },
            { "saf", ContentType.Saf },
            { "sass", ContentType.Sass },
            { "sbml", ContentType.Sbml },
            { "sc", ContentType.Sc },
            { "scd", ContentType.Scd },
            { "scm", ContentType.Scm },
            { "scq", ContentType.Scq },
            { "scs", ContentType.Scs },
            { "scss", ContentType.Scss },
            { "scurl", ContentType.Scurl },
            { "sda", ContentType.Sda },
            { "sdc", ContentType.Sdc },
            { "sdd", ContentType.Sdd },
            { "sdkd", ContentType.Sdkd },
            { "sdkm", ContentType.Sdkm },
            { "sdp", ContentType.Sdp },
            { "sdw", ContentType.Sdw },
            { "sea", ContentType.Sea },
            { "see", ContentType.See },
            { "seed", ContentType.Seed },
            { "sema", ContentType.Sema },
            { "semd", ContentType.Semd },
            { "semf", ContentType.Semf },
            { "senmlx", ContentType.Senmlx },
            { "sensmlx", ContentType.Sensmlx },
            { "ser", ContentType.Ser },
            { "setpay", ContentType.Setpay },
            { "setreg", ContentType.Setreg },
            { "sfs", ContentType.Sfs },
            { "sfv", ContentType.Sfv },
            { "sgi", ContentType.Sgi },
            { "sgl", ContentType.Sgl },
            { "sgm", ContentType.Sgm },
            { "sgml", ContentType.Sgml },
            { "sh", ContentType.Sh },
            { "shar", ContentType.Shar },
            { "shex", ContentType.Shex },
            { "shf", ContentType.Shf },
            { "shtml", ContentType.Shtml },
            { "sid", ContentType.Sid },
            { "sieve", ContentType.Sieve },
            { "sig", ContentType.Sig },
            { "sil", ContentType.Sil },
            { "silo", ContentType.Silo },
            { "sis", ContentType.Sis },
            { "sisx", ContentType.Sisx },
            { "sit", ContentType.Sit },
            { "sitx", ContentType.Sitx },
            { "siv", ContentType.Siv },
            { "skd", ContentType.Skd },
            { "skm", ContentType.Skm },
            { "skp", ContentType.Skp },
            { "skt", ContentType.Skt },
            { "sldm", ContentType.Sldm },
            { "sldx", ContentType.Sldx },
            { "slim", ContentType.Slim },
            { "slm", ContentType.Slm },
            { "sls", ContentType.Sls },
            { "slt", ContentType.Slt },
            { "sm", ContentType.Sm },
            { "smf", ContentType.Smf },
            { "smi", ContentType.Smi },
            { "smil", ContentType.Smil },
            { "smv", ContentType.Smv },
            { "smzip", ContentType.Smzip },
            { "snd", ContentType.Snd },
            { "snf", ContentType.Snf },
            { "so", ContentType.So },
            { "spc", ContentType.Spc },
            { "spdx", ContentType.Spdx },
            { "spf", ContentType.Spf },
            { "spl", ContentType.Spl },
            { "spot", ContentType.Spot },
            { "spp", ContentType.Spp },
            { "spq", ContentType.Spq },
            { "spx", ContentType.Spx },
            { "sql", ContentType.Sql },
            { "src", ContentType.Src },
            { "srt", ContentType.Srt },
            { "sru", ContentType.Sru },
            { "srx", ContentType.Srx },
            { "ssdl", ContentType.Ssdl },
            { "sse", ContentType.Sse },
            { "ssf", ContentType.Ssf },
            { "ssml", ContentType.Ssml },
            { "st", ContentType.St },
            { "stc", ContentType.Stc },
            { "std", ContentType.Std },
            { "stf", ContentType.Stf },
            { "sti", ContentType.Sti },
            { "stk", ContentType.Stk },
            { "stl", ContentType.Stl },
            { "stpx", ContentType.Stpx },
            { "stpxz", ContentType.Stpxz },
            { "stpz", ContentType.Stpz },
            { "str", ContentType.Str },
            { "stw", ContentType.Stw },
            { "styl", ContentType.Styl },
            { "stylus", ContentType.Stylus },
            { "sub", ContentType.Sub },
            { "sus", ContentType.Sus },
            { "susp", ContentType.Susp },
            { "sv4cpio", ContentType.Sv4cpio },
            { "sv4crc", ContentType.Sv4crc },
            { "svc", ContentType.Svc },
            { "svd", ContentType.Svd },
            { "svg", ContentType.Svg },
            { "svgz", ContentType.Svgz },
            { "swa", ContentType.Swa },
            { "swf", ContentType.Swf },
            { "swi", ContentType.Swi },
            { "swidtag", ContentType.Swidtag },
            { "sxc", ContentType.Sxc },
            { "sxd", ContentType.Sxd },
            { "sxg", ContentType.Sxg },
            { "sxi", ContentType.Sxi },
            { "sxm", ContentType.Sxm },
            { "sxw", ContentType.Sxw },
            { "t", ContentType.T },
            { "t3", ContentType.T3 },
            { "t38", ContentType.T38 },
            { "taglet", ContentType.Taglet },
            { "tao", ContentType.Tao },
            { "tap", ContentType.Tap },
            { "tar", ContentType.Tar },
            { "tcap", ContentType.Tcap },
            { "tcl", ContentType.Tcl },
            { "td", ContentType.Td },
            { "teacher", ContentType.Teacher },
            { "tei", ContentType.Tei },
            { "tex", ContentType.Tex },
            { "texi", ContentType.Texi },
            { "texinfo", ContentType.Texinfo },
            { "text", ContentType.Text },
            { "tfi", ContentType.Tfi },
            { "tfm", ContentType.Tfm },
            { "tfx", ContentType.Tfx },
            { "tga", ContentType.Tga },
            { "thmx", ContentType.Thmx },
            { "tif", ContentType.Tif },
            { "tiff", ContentType.Tiff },
            { "tk", ContentType.Tk },
            { "tmo", ContentType.Tmo },
            { "toml", ContentType.Toml },
            { "torrent", ContentType.Torrent },
            { "tpl", ContentType.Tpl },
            { "tpt", ContentType.Tpt },
            { "tr", ContentType.Tr },
            { "tra", ContentType.Tra },
            { "trig", ContentType.Trig },
            { "trm", ContentType.Trm },
            { "ts", ContentType.Ts },
            { "tsd", ContentType.Tsd },
            { "tsv", ContentType.Tsv },
            { "ttc", ContentType.Ttc },
            { "ttf", ContentType.Ttf },
            { "ttl", ContentType.Ttl },
            { "ttml", ContentType.Ttml },
            { "twd", ContentType.Twd },
            { "twds", ContentType.Twds },
            { "txd", ContentType.Txd },
            { "txf", ContentType.Txf },
            { "txt", ContentType.Txt },
            { "u32", ContentType.U32 },
            { "u8dsn", ContentType.U8dsn },
            { "u8hdr", ContentType.U8hdr },
            { "u8mdn", ContentType.U8mdn },
            { "u8msg", ContentType.U8msg },
            { "ubj", ContentType.Ubj },
            { "udeb", ContentType.Udeb },
            { "ufd", ContentType.Ufd },
            { "ufdl", ContentType.Ufdl },
            { "ulx", ContentType.Ulx },
            { "umj", ContentType.Umj },
            { "unityweb", ContentType.Unityweb },
            { "uoml", ContentType.Uoml },
            { "uri", ContentType.Uri },
            { "uris", ContentType.Uris },
            { "urls", ContentType.Urls },
            { "usdz", ContentType.Usdz },
            { "ustar", ContentType.Ustar },
            { "utz", ContentType.Utz },
            { "uu", ContentType.Uu },
            { "uva", ContentType.Uva },
            { "uvd", ContentType.Uvd },
            { "uvf", ContentType.Uvf },
            { "uvg", ContentType.Uvg },
            { "uvh", ContentType.Uvh },
            { "uvi", ContentType.Uvi },
            { "uvm", ContentType.Uvm },
            { "uvp", ContentType.Uvp },
            { "uvs", ContentType.Uvs },
            { "uvt", ContentType.Uvt },
            { "uvu", ContentType.Uvu },
            { "uvv", ContentType.Uvv },
            { "uvva", ContentType.Uvva },
            { "uvvd", ContentType.Uvvd },
            { "uvvf", ContentType.Uvvf },
            { "uvvg", ContentType.Uvvg },
            { "uvvh", ContentType.Uvvh },
            { "uvvi", ContentType.Uvvi },
            { "uvvm", ContentType.Uvvm },
            { "uvvp", ContentType.Uvvp },
            { "uvvs", ContentType.Uvvs },
            { "uvvt", ContentType.Uvvt },
            { "uvvu", ContentType.Uvvu },
            { "uvvv", ContentType.Uvvv },
            { "uvvx", ContentType.Uvvx },
            { "uvvz", ContentType.Uvvz },
            { "uvx", ContentType.Uvx },
            { "uvz", ContentType.Uvz },
            { "vbox", ContentType.Vbox },
            { "vcard", ContentType.Vcard },
            { "vcd", ContentType.Vcd },
            { "vcf", ContentType.Vcf },
            { "vcg", ContentType.Vcg },
            { "vcs", ContentType.Vcs },
            { "vcx", ContentType.Vcx },
            { "vdi", ContentType.Vdi },
            { "vds", ContentType.Vds },
            { "vhd", ContentType.Vhd },
            { "vis", ContentType.Vis },
            { "viv", ContentType.Viv },
            { "vmdk", ContentType.Vmdk },
            { "vob", ContentType.Vob },
            { "vor", ContentType.Vor },
            { "vox", ContentType.Vox },
            { "vrml", ContentType.Vrml },
            { "vsd", ContentType.Vsd },
            { "vsf", ContentType.Vsf },
            { "vss", ContentType.Vss },
            { "vst", ContentType.Vst },
            { "vsw", ContentType.Vsw },
            { "vtf", ContentType.Vtf },
            { "vtt", ContentType.Vtt },
            { "vtu", ContentType.Vtu },
            { "vxml", ContentType.Vxml },
            { "w3d", ContentType.W3d },
            { "wad", ContentType.Wad },
            { "wadl", ContentType.Wadl },
            { "war", ContentType.War },
            { "wasm", ContentType.Wasm },
            { "wav", ContentType.Wav },
            { "wax", ContentType.Wax },
            { "wbmp", ContentType.Wbmp },
            { "wbs", ContentType.Wbs },
            { "wbxml", ContentType.Wbxml },
            { "wcm", ContentType.Wcm },
            { "wdb", ContentType.Wdb },
            { "wdp", ContentType.Wdp },
            { "weba", ContentType.Weba },
            { "webapp", ContentType.Webapp },
            { "webm", ContentType.Webm },
            { "webp", ContentType.Webp },
            { "wg", ContentType.Wg },
            { "wgt", ContentType.Wgt },
            { "wks", ContentType.Wks },
            { "wm", ContentType.Wm },
            { "wma", ContentType.Wma },
            { "wmd", ContentType.Wmd },
            { "wmf", ContentType.Wmf },
            { "wml", ContentType.Wml },
            { "wmlc", ContentType.Wmlc },
            { "wmls", ContentType.Wmls },
            { "wmlsc", ContentType.Wmlsc },
            { "wmv", ContentType.Wmv },
            { "wmx", ContentType.Wmx },
            { "wmz", ContentType.Wmz },
            { "woff", ContentType.Woff },
            { "woff2", ContentType.Woff2 },
            { "wpd", ContentType.Wpd },
            { "wpl", ContentType.Wpl },
            { "wps", ContentType.Wps },
            { "wqd", ContentType.Wqd },
            { "wri", ContentType.Wri },
            { "wrl", ContentType.Wrl },
            { "wsc", ContentType.Wsc },
            { "wsdl", ContentType.Wsdl },
            { "wspolicy", ContentType.Wspolicy },
            { "wtb", ContentType.Wtb },
            { "wvx", ContentType.Wvx },
            { "x32", ContentType.X32 },
            { "x3d", ContentType.X3d },
            { "x3db", ContentType.X3db },
            { "x3dbz", ContentType.X3dbz },
            { "x3dv", ContentType.X3dv },
            { "x3dvz", ContentType.X3dvz },
            { "x3dz", ContentType.X3dz },
            { "xaml", ContentType.Xaml },
            { "xap", ContentType.Xap },
            { "xar", ContentType.Xar },
            { "xav", ContentType.Xav },
            { "xbap", ContentType.Xbap },
            { "xbd", ContentType.Xbd },
            { "xbm", ContentType.Xbm },
            { "xca", ContentType.Xca },
            { "xcs", ContentType.Xcs },
            { "xdf", ContentType.Xdf },
            { "xdm", ContentType.Xdm },
            { "xdp", ContentType.Xdp },
            { "xdssc", ContentType.Xdssc },
            { "xdw", ContentType.Xdw },
            { "xel", ContentType.Xel },
            { "xenc", ContentType.Xenc },
            { "xer", ContentType.Xer },
            { "xfdf", ContentType.Xfdf },
            { "xfdl", ContentType.Xfdl },
            { "xht", ContentType.Xht },
            { "xhtml", ContentType.Xhtml },
            { "xhvml", ContentType.Xhvml },
            { "xif", ContentType.Xif },
            { "xla", ContentType.Xla },
            { "xlam", ContentType.Xlam },
            { "xlc", ContentType.Xlc },
            { "xlf", ContentType.Xlf },
            { "xlm", ContentType.Xlm },
            { "xls", ContentType.Xls },
            { "xlsb", ContentType.Xlsb },
            { "xlsm", ContentType.Xlsm },
            { "xlsx", ContentType.Xlsx },
            { "xlt", ContentType.Xlt },
            { "xltm", ContentType.Xltm },
            { "xltx", ContentType.Xltx },
            { "xlw", ContentType.Xlw },
            { "xm", ContentType.Xm },
            { "xml", ContentType.Xml },
            { "xns", ContentType.Xns },
            { "xo", ContentType.Xo },
            { "xop", ContentType.Xop },
            { "xpi", ContentType.Xpi },
            { "xpl", ContentType.Xpl },
            { "xpm", ContentType.Xpm },
            { "xpr", ContentType.Xpr },
            { "xps", ContentType.Xps },
            { "xpw", ContentType.Xpw },
            { "xpx", ContentType.Xpx },
            { "xsd", ContentType.Xsd },
            { "xsl", ContentType.Xsl },
            { "xslt", ContentType.Xslt },
            { "xsm", ContentType.Xsm },
            { "xspf", ContentType.Xspf },
            { "xul", ContentType.Xul },
            { "xvm", ContentType.Xvm },
            { "xvml", ContentType.Xvml },
            { "xwd", ContentType.Xwd },
            { "xyz", ContentType.Xyz },
            { "xz", ContentType.Xz },
            { "yaml", ContentType.Yaml },
            { "yang", ContentType.Yang },
            { "yin", ContentType.Yin },
            { "yml", ContentType.Yml },
            { "ymp", ContentType.Ymp },
            { "z1", ContentType.Z1 },
            { "z2", ContentType.Z2 },
            { "z3", ContentType.Z3 },
            { "z4", ContentType.Z4 },
            { "z5", ContentType.Z5 },
            { "z6", ContentType.Z6 },
            { "z7", ContentType.Z7 },
            { "z8", ContentType.Z8 },
            { "zaz", ContentType.Zaz },
            { "zip", ContentType.Zip },
            { "zir", ContentType.Zir },
            { "zirz", ContentType.Zirz },
            { "zmm", ContentType.Zmm },
        };
        private static readonly IReadOnlyDictionary<string, ContentType> MimeToCt = new Dictionary<string, ContentType>()
        {
            { "application/x-www-form-urlencoded", ContentType.UrlEncoded },
            { "multipart/form-data", ContentType.MultiPart },
            { "audio/x-aac", ContentType.Aac },
            { "application/x-authorware-map", ContentType.Aam },
            { "application/x-authorware-seg", ContentType.Aas },
            { "application/x-abiword", ContentType.Abw },
            { "application/pkix-attr-cert", ContentType.Ac },
            { "application/vnd.americandynamics.acc", ContentType.Acc },
            { "application/x-ace-compressed", ContentType.Ace },
            { "application/vnd.acucobol", ContentType.Acu },
            { "application/vnd.acucorp", ContentType.Acutc },
            { "audio/adpcm", ContentType.Adp },
            { "application/vnd.audiograph", ContentType.Aep },
            { "application/vnd.ibm.modcap", ContentType.Afp },
            { "application/vnd.ahead.space", ContentType.Ahead },
            { "audio/x-aiff", ContentType.Aiff },
            { "application/vnd.adobe.air-application-installer-package+zip", ContentType.Air },
            { "application/vnd.dvb.ait", ContentType.Ait },
            { "application/vnd.amiga.ami", ContentType.Ami },
            { "audio/amr", ContentType.Amr },
            { "application/vnd.android.package-archive", ContentType.Apk },
            { "image/apng", ContentType.Apng },
            { "application/vnd.lotus-approach", ContentType.Apr },
            { "application/x-freearc", ContentType.Arc },
            { "application/x-arj", ContentType.Arj },
            { "video/x-ms-asf", ContentType.Asf },
            { "text/x-asm", ContentType.Asm },
            { "application/vnd.accpac.simply.aso", ContentType.Aso },
            { "application/atom+xml", ContentType.Atom },
            { "application/atomcat+xml", ContentType.Atomcat },
            { "application/atomsvc+xml", ContentType.Atomsvc },
            { "application/vnd.antix.game-component", ContentType.Atx },
            { "audio/basic", ContentType.Au },
            { "video/x-msvideo", ContentType.Avi },
            { "image/avif", ContentType.Avif },
            { "application/applixware", ContentType.Aw },
            { "application/vnd.airzip.filesecure.azf", ContentType.Azf },
            { "application/vnd.airzip.filesecure.azs", ContentType.Azs },
            { "image/vnd.airzip.accelerator.azv", ContentType.Azv },
            { "application/vnd.amazon.ebook", ContentType.Azw },
            { "image/vnd.pco.b16", ContentType.B16 },
            { "application/x-msdownload", ContentType.Bat },
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            { "application/vnd.ms-excel.addin.macroenabled.12", ContentType.Xlam },
            { "application/x-xliff+xml", ContentType.Xlf },
            { "application/vnd.ms-excel", ContentType.Xls },
            { "application/vnd.ms-excel.sheet.binary.macroenabled.12", ContentType.Xlsb },
            { "application/vnd.ms-excel.sheet.macroenabled.12", ContentType.Xlsm },
            { "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", ContentType.Xlsx },
            { "application/vnd.ms-excel.template.macroenabled.12", ContentType.Xltm },
            { "application/vnd.openxmlformats-officedocument.spreadsheetml.template", ContentType.Xltx },
            { "audio/xm", ContentType.Xm },
            { "application/xml", ContentType.Xml },
            { "application/xcap-ns+xml", ContentType.Xns },
            { "application/vnd.olpc-sugar", ContentType.Xo },
            { "application/xop+xml", ContentType.Xop },
            { "application/x-xpinstall", ContentType.Xpi },
            { "application/xproc+xml", ContentType.Xpl },
            { "image/x-xpixmap", ContentType.Xpm },
            { "application/vnd.is-xpr", ContentType.Xpr },
            { "application/vnd.ms-xpsdocument", ContentType.Xps },
            { "application/vnd.intercon.formnet", ContentType.Xpw },
            { "application/xslt+xml", ContentType.Xslt },
            { "application/vnd.syncml+xml", ContentType.Xsm },
            { "application/vnd.mozilla.xul+xml", ContentType.Xul },
            { "application/xv+xml", ContentType.Xvml },
            { "image/x-xwindowdump", ContentType.Xwd },
            { "chemical/x-xyz", ContentType.Xyz },
            { "application/x-xz", ContentType.Xz },
            { "text/yaml", ContentType.Yaml },
            { "application/yang", ContentType.Yang },
            { "application/yin+xml", ContentType.Yin },
            { "text/x-suse-ymp", ContentType.Ymp },
            { "application/x-zmachine", ContentType.Z1 },
            { "application/vnd.zzazz.deck+xml", ContentType.Zaz },
            { "application/zip", ContentType.Zip },
            { "application/vnd.zul", ContentType.Zir },
            { "application/vnd.handheld-entertainment+xml", ContentType.Zmm },
        };
    }
}