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<pre>public&nbsp;boolean&nbsp;isDomainSuffix(<a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;extension)</pre>
<div class="block">return whether the extension is a registered domain entry</div>
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<pre>public&nbsp;<a href="../../../../../org/apache/nutch/util/domain/DomainSuffix.html" title