Test http://www.w3.org/2001/DOM-Test-Suite/level3/core/nodesetuserdata07

<test name='nodesetuserdata07' schemaLocation='http://www.w3.org/2001/DOM-Test-Suite/Level-3 dom3.xsd'>
     <metadata>
          <title>nodesetuserdata07</title>
          <creator>IBM</creator>
          <description> Invoke setUserData on a Notation to set its UserData to a Comment node twice using the same key. Verify if the UserData object that was returned by second setUserData is the Comment node set in the first setUserData call. </description>
          <contributor>Neil Delima</contributor>
          <date qualifier='created'>2002-06-10</date>
          <subject resource='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core#Node3-setUserData'/>
</metadata>
     <var name='doc' type='Document'/>
     <var name='docType' type='DocumentType'/>
     <var name='notations' type='NamedNodeMap'/>
     <var name='notation' type='Notation'/>
     <var name='comment' type='Comment'/>
     <var name='userData' type='DOMUserData'/>
     <var name='returned' type='DOMUserData'/>
     <var name='success' type='boolean'/>
     <var name='retUserData' type='DOMUserData'/>
     <var name='nullHandler' type='UserDataHandler' isNull='true'/>
     <load var='doc' href='hc_staff' willBeModified='true'/>
     <doctype var='docType' obj='doc'/>
     <notations var='notations' obj='docType'/>
     <getNamedItem var='notation' obj='notations' name='"notation1"'/>
     <createComment var='comment' obj='doc' data='"COMMENT_NODE"'/>
     <setUserData obj='notation' var='retUserData' key='"Key1"' data='comment' handler='nullHandler'/>
     <setUserData var='returned' obj='notation' key='"Key1"' data='comment' handler='nullHandler'/>
     <isEqualNode var='success' obj='returned' arg='comment'/>
     <assertTrue actual='success' id='nodesetuserdata07'/>
</test>

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