Similar to term SupportedFormats we should define an annotation that describes which formats are supported for $metadata, e.g. SupportedMetadataFormats.
Similar to term SupportedFormats we should define an annotation that describes which formats are supported for $metadata, e.g. SupportedMetadataFormats.
As discussed; a little strange that you have to read this document in order to get this information, but it might be useful for discovering what other formats are available.
Perhaps consider use of OPTIONS, here and in general.