registered implementation of <a href="ext/ParamConverterProvider.html" title="interface in jakarta.ws.rs.ext"><code>ParamConverterProvider</code></a> JAX-RS extension SPI that
 returns a <a href="ext/ParamConverter.html" title="interface in jakarta.ws.rs.ext"><code>ParamConverter</code></a> instance capable of a "from string" conversion for the type.</li>
 <li>Be <code>List&lt;T&gt;</code>, <code>Set&lt;T&gt;</code>, <code>SortedSet&lt;T&gt;</code> or <code>T[]</code> array, where <code>T</code> satisfies 2