docs: def customData( self, key, default = None ):
          """
          Return the custom data that is stored on this node for the \
          given key, returning the default parameter if none was found.
          
          :param      key         <str>
          :param      default     <variant>
          
          :return     <variant>
          """
          return self._customData.get(nativestring(key), default)