question: looksup the prefix for the given uri . this returns null if the uri is not a declared namespace . concode_field_sep HashMap namespaces concode_field_sep DeclaredNamespaces add concode_elem_sep DeclaredNamespaces add concode_elem_sep DeclaredNamespaces add concode_elem_sep boolean isPrefixDefined concode_elem_sep Map getNamespaces concode_elem_sep boolean isNamespaceDefined
target: String function ( final String arg0 ) { if ( arg0 == null ) { throw new NullPointerException ( ) ; } if ( namespaces == null ) { return null ; } return ( String ) namespaces . get ( arg0 ) ; }