@Override
      public Class<?> loadClass(String name) throws ClassNotFoundException {
        if (disallowedClassNames.contains(name)) {
          throw new ClassNotFoundException("I'm sorry Dave, I'm afraid I can't do that.");
        }
        if (name.startsWith(concurrentPackage)) {
          Class<?> c = findLoadedClass(name);
          if (c == null) {

        Collection<ChannelInfo> availableChannels = manager.getHealthyChannels();

        if (availableChannels.isEmpty()) {
            throw new NoAvailableChannelException("No healthy channels available");
        }

        if (availableChannels.size() == 1) {
            return availableChannels.iterator().next();
        }

        switch (strategy) {

  }

  @Override
  Collection<V> createValues() {
    return new FilteredMultimapValues<>(this);
  }

  @Override
  Iterator<Entry<K, V>> entryIterator() {
    throw new AssertionError("should never be called");
  }

  @Override
  Map<K, Collection<V>> createAsMap() {
    return new AsMap();
  }

  @Override
  Set<K> createKeySet() {

    }
  }

  private static class ExpectedHashCode {
    final byte[] bytes;
    final int asInt;
    final Long asLong; // null means that asLong should throw an exception
    final String toString;

    ExpectedHashCode(byte[] bytes, int asInt, @Nullable Long asLong, String toString) {
      this.bytes = bytes;
      this.asInt = asInt;
      this.asLong = asLong;

                            logger.debug("{} exists.", urlQueue.getUrl(), e);
                        }
                        return;
                    }
                    throw e;
                }
                if (logger.isDebugEnabled()) {
                    logger.debug("Storing child urls: {}", resultData.getChildUrlSet());
                }

            @Override
            public RescorerBuilder<?> evaluate(Map<String, Object> params) {
                if (params != null && params.containsKey("throwException")) {
                    throw new RuntimeException("Test exception");
                }
                return createMockRescorerBuilder();
            }
        };

        // Test normal case

   * implement shutdown and termination behavior.
   *
   * <p>Because of the nature of single-thread execution, the methods {@code scheduleAtFixedRate}
   * and {@code scheduleWithFixedDelay} are not supported by this class and will throw an
   * UnsupportedOperationException.
   *
   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to

  }

    private Object writeReplace() {
    return new SerializedForm<>(delegate());
  }

    private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  /** Serialized form of the map, to avoid serializing the constraint. */
  private static final class SerializedForm<B extends @Nullable Object> implements Serializable {

      }

      @Override
      public int size() {
        return Ints.saturatedCast(edgeCount());
      }

      @Override
      public boolean remove(@Nullable Object o) {
        throw new UnsupportedOperationException();
      }

      // Mostly safe: We check contains(u) before calling successors(u), so we perform unsafe
      // operations only in weird cases like checking for an EndpointPair<ArrayList> in a

        setField(cmd, "locks", new LockingAndXRange[] { new LockingAndXRange(false) });
        setField(cmd, "largeFile", false);
        // create a buffer that is empty, readBytesWireFormat should throw
        byte[] buffer = new byte[0];
        assertThrows(ArrayIndexOutOfBoundsException.class, () -> cmd.readBytesWireFormat(buffer, 0));
    }

    /**