if (implementationRegistration != null) {
                throw new IllegalStateException(String.format("Cannot register implementation for type '%s' because an implementation for this type was already registered by %s",
                    publicType, implementationRegistration.getSource()));
            }
            if (managedPublicType) {

    checkNotNull(timeoutUnit);
    try {
      return callable.call();
    } catch (RuntimeException e) {
      throw new UncheckedExecutionException(e);
    } catch (Exception e) {
      restoreInterruptIfIsInterruptedException(e);
      throw new ExecutionException(e);
    } catch (Error e) {
      throw new ExecutionError(e);
    }
  }

  @CanIgnoreReturnValue // TODO(kak): consider removing this
  @Override

   * {@code view} returned by this method will be invalidated, and will throw {@code
   * IllegalStateException} if it is accessed in any way, with the following exceptions:
   *
   * <ul>
   *   <li>{@code view.equals(view)} evaluates to {@code true} (but any other `equals()` expression
   *       involving {@code view} will throw)
   *   <li>{@code hashCode()} does not throw

    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the {@code RangeSet} unmodified.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public void removeAll(RangeSet<C> other) {
    throw new UnsupportedOperationException();
  }

  final UnmodifiableIterator<Cell<R, C, V>> cellIterator() {
    throw new AssertionError("should never be called");
  }

  @Override
  public ImmutableCollection<V> values() {
    return (ImmutableCollection<V>) super.values();
  }

  @Override
  abstract ImmutableCollection<V> createValues();

  @Override
  final Iterator<V> valuesIterator() {
    throw new AssertionError("should never be called");
  }

  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  public void testRemoveAll_unsupportedEmptyCollection() {
    try {
      assertFalse(
          "removeAll(emptyCollection) should return false or throw "
              + "UnsupportedOperationException",
          collection.removeAll(MinimalCollection.of()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final boolean remove(@CheckForNull Object object) {
    throw new UnsupportedOperationException();
  }

  /**

   *   throwIfUnchecked(failure);
   *   throw new AssertionError(failure);
   * }
   * </pre>
   *
   * @since 20.0
   */
  public static void throwIfUnchecked(Throwable throwable) {
    checkNotNull(throwable);
    if (throwable instanceof RuntimeException) {
      throw (RuntimeException) throwable;
    }
    if (throwable instanceof Error) {
      throw (Error) throwable;
    }
  }

  /**

        if (responseData == null || !responseData.hasResponseBody()) {
            throw new CrawlingAccessException("No response body.");
        }

        final ExtractorFactory extractorFactory = crawlerContainer.getComponent("extractorFactory");
        if (extractorFactory == null) {
            throw new CrawlerSystemException("Could not find extractorFactory.");
        }

        }
        throw new InvalidUserDataException(String.format("Cannot convert URL '%s' to a file.", converted));
    }

    protected void validate(File file, PathValidation validation) {
        switch (validation) {
            case NONE:
                break;
            case EXISTS:
                if (!file.exists()) {