public abstract Map<String, SubClusterPolicyConfiguration> getPoliciesConfigurations()
      throws Exception;
@Test
  public void testGetPoliciesConfigurations() throws YarnException {
    Map<String, SubClusterPolicyConfiguration> queuePolicies =
        facade.getPoliciesConfigurations();
    for (String queue : queuePolicies.keySet()) {
      SubClusterPolicyConfiguration expectedPC = stateStoreTestUtil.queryPolicyConfiguration(queue);
      SubClusterPolicyConfiguration cachedPC = queuePolicies.get(queue);
      assertEquals(expectedPC, cachedPC);
    }
  }