hether this task can deal with non-file resources.

 <p>This implementation returns true only if this task is
 &lt;gunzip&gt;.  Any subclass of this class that also wants to
 support non-file resources needs to override this method.  We
 need to do so for backwards compatibility reasons since we
 can't expect subclasses to support resources.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/tools/ant/taskdefs/Unpack.html#supportsNonFile