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<h4>hasUserIdBeenSet</h4>
<pre>public&nbsp;boolean&nbsp;hasUserIdBeenSet()</pre>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether the user id has been explicitly set.</dd>
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<h4>setGroup</h4>
<pre>public&nbsp;void&nbsp;setGroup(java.lang.String&nbsp;groupName)</pre>
<div class="block">The groupname for the tar entry; optional, default=""
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