method named <code>valueOf</code> or <code>fromString</code> that accepts a single String argument (see, for
 example, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html#valueOf(java.lang.String)" title="class or interface in java.lang" class="external-link"><code>Integer.valueOf(String)</code></a>).</li>
 <li>Have a registered implementation of <a href="ext/ParamConverterProvider.html" title="interface in jakarta.ws.rs.ext"><code>ParamConverterProvider</code></a> J