`JacksonJsonProvider` has @Produces(MediaType.WILDCARD) and yet hasMatchingMediaType(MediaType.WILDCARD) return false

[cowtowncoder]

(note: copy of FasterXML/jackson-jaxrs-providers#193 from older JAX-RS provider -- see details)

Looks like we should indicate more specific MIME content-types for @Produces to make content type matching work: to be done for CBOR, JSON, XML and YAML (and possibly Smile but not sure it's mime type is correct)