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<title>ExtensionSet Type</title>
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<h2><a>ExtensionSet</a></h2>
<p>Utility type that represents a set of Extensions.</p>
<p>Note that this type works with extensions as defined by the "Optional Package" specification.
For more information about optional packages, see the document <em>Optional Package Versioning</em>
in the documentation bundle for your Java Standard Edition package, in
file <samp>guide/extensions/versioning.html</samp> or online
at <a href="https://docs.oracle.com/javase/8/docs/technotes/guides/versioning/spec/versioning2.html#wp90779"
target="_top">Package Versioning documentation.</a></p>
<p>The only supported attribute is <code>refid</code> which makes this
<code>extensionset</code>
a <a href="../using.html#references">reference</a> to
an <code>extensionset</code> defined elsewhere. If specified no
other attributes or nested elements are allowed.</p>
<h3>Nested elements</h3>
<h4>extension</h4>
<p><a href="extension.html">Extension</a> object to add to set.</p>
<h4>fileset</h4>
<p><a href="fileset.html">FileSet</a>s all files contained contained within set that are jars and
implement an extension are added to extension set.</p>
<h4>libfileset</h4>
<p>All files contained contained within set that are jars and implement an extension are added to
extension set. However, the extension information may be modified by attributes of libfileset.</p>
<h4>Examples</h4>
<pre>
&lt;extension id=&quot;e1&quot;
extensionName=&quot;MyExtensions&quot;
specificationVersion=&quot;1.0&quot;
specificationVendor=&quot;Peter Donald&quot;
implementationVendorID=&quot;vv&quot;
implementationVendor=&quot;Apache&quot;
implementationVersion=&quot;2.0&quot;
implementationURL=&quot;https://somewhere.com/myExt.jar&quot;/&gt;
&lt;libfileset id="lfs"
includeUrl="true"
includeImpl="false"
dir="tools/lib"&gt;
&lt;include name="*.jar"/&gt;
&lt;/libfileset&gt;
&lt;extensionSet id="exts"&gt;
&lt;libfileset dir="lib"&gt;
&lt;include name="*.jar"/&gt;
&lt;/libfileset&gt;
&lt;libfileset refid="lfs"/&gt;
&lt;extension refid="e1"/&gt;
&lt;/extensionSet&gt;
</pre>
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