Returns a list of all the data gathered from the engine
        iterable.

def _collect_data(self):
        """
        Returns a list of all the data gathered from the engine
        iterable.
        """
        all_data = []
        for line in self.engine.run_engine():
            logging.debug("Adding {} to all_data".format(line))
            all_data.append(line.copy())
            logging.debug("all_data is now {}".format(all_data))

        return all_data