ternal=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="MostlySingletonSet.html" title="type parameter in MostlySingletonSet">E</a>&gt;</code></dd>
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<h3><a id="retainAll(java.util.Collection)">retainAll</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType">boolean</span>&nbsp;<span class="memberName">retainAll</span>&#8203;(<span class="arguments"><a