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<h4>isRegistered</h4>
<pre>boolean&nbsp;isRegistered&#8203;(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;?&gt;&nbsp;componentClass)</pre>
<div class="block">Check if a component of the supplied <code>componentClass</code> class has been previously
 registered in the runtime configuration context.
 <p>
 Method returns <code>true</code> in case a component of the supplied <code>componentClass</