@SuppressWarnings("unchecked")
    @Override
    Collection<E> delegate() {
      return (Collection<E>) super.delegate();
    }

    @Override
    public boolean add(E e) {
      synchronized (mutex) {
        return delegate().add(e);
      }
    }

    @Override
    public boolean addAll(Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(c);
      }

          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and

    protected void regQ(QueryBuilder builder) {
        assertObjectNotNull("builder", builder);
        if (queryBuilderList == null) {
            queryBuilderList = new ArrayList<>();
        }
        queryBuilderList.add(builder);
    }

    protected void regOBA(String field) {
        registerOrderBy(field, true);
    }

    protected void regOBD(String field) {
        registerOrderBy(field, false);
    }

    protected void regQ(QueryBuilder builder) {
        assertObjectNotNull("builder", builder);
        if (queryBuilderList == null) {
            queryBuilderList = new ArrayList<>();
        }
        queryBuilderList.add(builder);
    }

    protected void regOBA(String field) {
        registerOrderBy(field, true);
    }

    protected void regOBD(String field) {
        registerOrderBy(field, false);
    }

          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and

        assertTrue(Arrays.asList(channel1, channel2).contains(second));
    }

    @Test
    void testLeastLoadedStrategy() {
        loadBalancer.setStrategy(LoadBalancingStrategy.LEAST_LOADED);

        // Add pending operations to channel1 to make it more loaded
        channel1.addPendingOperation(mockMessage);

        when(mockChannelManager.getHealthyChannels()).thenReturn(Arrays.asList(channel1, channel2));

      assertEquals(0, shutDownCalled);
      shutDownCalled++;
      assertEquals(State.STOPPING, state());
    }

    @Override
    protected Executor executor() {
      transitionStates.add(state());
      return directExecutor();
    }
  }

  // Functional tests using real thread. We only verify publicly visible state.
  // Interaction assertions are done by the single-threaded unit tests.

    if (predicate == null) {
      throw new IllegalArgumentException(
          expectedThrowable
              + " is not yet supported by ReflectionFreeAssertThrows. Add an entry for it in the"
              + " map in that class.");
    }
    Object result;
    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {

			lookupConfigs(srvCfg, objAPI)
			return nil, err
		}
	}

	json := jsoniter.ConfigCompatibleWithStandardLibrary
	if err := json.Unmarshal(data, &srvCfg); err != nil {
		return nil, err
	}

	// Add any missing entries
	return srvCfg.Merge(), nil
}

// ConfigSys - config system.
type ConfigSys struct{}

// Init - initializes config system from config.json.

		if err != nil {
			return nil, err
		}
		if opts.DriveOPTimeout != nil {
			// Read deadlines are sufficient for now as per various
			// scenarios of hung node detection, we may add Write deadlines
			// if needed later on.
			return deadlineconn.New(conn).WithReadDeadline(opts.DriveOPTimeout()), nil
		}
		return conn, nil
	}