Get a list of lists of tuples from JSON raw data string. Those lists
        represent strokes with control points.

        Returns
        -------
        list :
            A list of strokes. Each stroke is a list of dictionaries
            {'x': 123, 'y': 42, 'time': 1337}

def get_pointlist(self):
        """
        Get a list of lists of tuples from JSON raw data string. Those lists
        represent strokes with control points.

        Returns
        -------
        list :
            A list of strokes. Each stroke is a list of dictionaries
            {'x': 123, 'y': 42, 'time': 1337}
        """
        try:
            pointlist = json.loads(self.raw_data_json)
        except Exception as inst:
            logging.debug("pointStrokeList: strokelistP")
            logging.debug(self.raw_data_json)
            logging.debug("didn't work")
            raise inst

        if len(pointlist) == 0:
            logging.warning("Pointlist was empty. Search for '" +
                            self.raw_data_json + "' in `wm_raw_draw_data`.")
        return pointlist