>Returns:</span></dt>
<dd><code>true </code> if is singleton, otherwise <code>false</code>.</dd>
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<h4>isPrimary</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isPrimary()</pre>
<div class="block">Checks if the described component is the primary component
 that must be selected in the case of multiple possible implementations.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></