lass&nbsp;<code><a href="../../../../../org/apache/tools/ant/taskdefs/Unpack.html" title="class in org.apache.tools.ant.taskdefs">Unpack</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the value ".gz"</dd>
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<h4>extract</h4>
<pre>protected&nbsp;void&nbsp;extract()</pre>
<div class="block">Implement the gunzipping.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt