def METHOD_NAME(self, run_id=None):
    """Stops runninng experiment/s.
    Args:
        run_id (str): The run id for a training session. A unique run id is created for every train. If set to None default is last experiment train.
    Returns:
        Results for each provider. ::
            {
                'auger': {
                    'result': True,
                    'data': {
                        'stopped': <experiment_name>
                    }
                }
            }
    Examples:
        .. code-block:: python
            ctx = Context()
            experiment = A2MLExperiment(ctx, providers).stop()
    """
    return self.runner.execute('stop', run_id)