alue of
 <code>mediaType</code> with the value of each writer's
 <a href="../../../../javax/ws/rs/Produces.html" title="annotation in javax.ws.rs"><code>Produces</code></a>, ensuring the supplied value of
 <code>type</code> is assignable to the generic type of the reader, and
 eliminating those that do not match.
 The list of matching writers is then ordered with those with the best
 matching values of <a href="../../../../javax/ws/rs/Produces.html" title="annotation in javax.ws.rs"><code>Produces</code></a