jax-rs

Is your feature request related to a problem? Please describe.
Robin noticed that all of the minimal "Parameters" examples are duplicates.

Currently, we generate one instance per "choice type". However, in the case of the minimal Parameters examples, these choice types aren't even required in the resource and so they are not present, leading to 50 copies of the same resource.

**Describ

opentracing-concurrent is used in tests therefore should be removed from opentracing-jaxrs2