| GET | /api/languages/list | 
|---|
System.NotSupportedException: Unknown language 'mjs', Supported languages: csharp, typescript, dart, java, kotlin, python, swift, vbnet, fsharp at ServiceStack.NativeTypes.LangGeneratorExtensions.GenerateSourceCode(MetadataTypes metadataTypes, MetadataTypesConfig typesConfig, String lang, IRequest req, Action`1 configure) at ServiceStack.NativeTypes.LangGeneratorExtensions.GenerateSourceCode(List`1 metadataTypes, String lang, IRequest req, Action`1 configure) at ServiceStack.Metadata.BaseMetadataHandler.d__12.MoveNext() 
To override the Content-type in your clients, use the HTTP Accept Header, append the .xml suffix or ?format=xml
The following are sample HTTP requests and responses. The placeholders shown need to be replaced with actual values.
GET /api/languages/list HTTP/1.1 Host: doapigw.baasbv.nl Accept: application/xml
HTTP/1.1 200 OK
Content-Type: application/xml
Content-Length: length
<ArrayOfLanguageIdentifier xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/IDB.API.DTO.Language">
  <LanguageIdentifier>
    <DisplayName>String</DisplayName>
    <ID>0</ID>
  </LanguageIdentifier>
</ArrayOfLanguageIdentifier>