def mock_get(pipeline, allowDiskUse):  # pylint: disable=W0613,C0103
    """
    Return mocked mongodb docs.
    """
    return [
        {'_id': 'dummy_id_A', 'value': 'dummy_value_A'},
        {'_id': 'dummy_id_B', 'value': 'dummy_value_B'},
    ]