question: public String findURIFromDoc ( int owner ) { int n = m_sourceTree . size ( ) ; for ( int i = 0 ; i < n ; i ++ ) { SourceTree sTree = ( SourceTree ) m_sourceTree . elementAt ( i ) ; if ( owner == sTree . m_root ) return sTree . m_url ; } return null ; }
target:  Given a document, find the URL associated with that document.