@Override
  public String toString() {
    return "QJM to " + loggers;
  }
@Test
  public void testToString() throws Exception {
    GenericTestUtils.assertMatches(
        qjm.toString(),
        "QJM to \\[127.0.0.1:\\d+, 127.0.0.1:\\d+, 127.0.0.1:\\d+\\]");
  }