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<tr class="memdesc:af9ab3371e290a109feef6deb9bb27815 inherit pub_methods_classob_1_1Filter"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return Enable State.  <br /></td></tr>
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<tr class="memitem:a220c46e6f376c8891b0b566d3495e047 inherit pub_methods_classob_1_1Filter"><td class="memItemLeft" align="right" valign="top">virtual std::shared_ptr&lt; 