Link"><a href="../../../../javax/ws/rs/core/Configuration.html#isRegistered-java.lang.Object-">isRegistered</a></span>&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;component)</code></th>
<td class="colLast">
<div class="block">Check if a particular API <code>component</code> instance (such as providers or
 <a href="../../../../javax/ws/rs/core/Feature.html" title="interface in javax.ws.rs.core"><code