docs: def findNodeByRegex( self, objectRegex ):
          """
          Looks up the first instance of the node who matches the inputed regex
          expression.
          
          :param      objectRegex | <str>
          
          :return     <XNode> || None
          """
          expr = re.compile(nativestring(objectRegex))
          for item in self.items():
              if ( isinstance(item, XNode) and
                   expr.match(item.displayName()) ):
                  return item
          return None