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>

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)