new ClUnsupportedOperationException("hoge", new NullPointerException());
        assertThat(clUnsupportedOperationException.getMessage(), is("hoge"));
        assertThat(clUnsupportedOperationException.getCause(), instanceOf(NullPointerException.class));
    }

    /**
     * Test method for

      try {
        entrySet.removeAll(null);
        fail("Expected NullPointerException.");
      } catch (NullPointerException expected) {
      }
    } else {
      try {
        entrySet.removeAll(null);
        fail("Expected UnsupportedOperationException or NullPointerException.");
      } catch (UnsupportedOperationException | NullPointerException e) {
        // Expected.
      }
    }
    assertInvariants(map);

      try {
        entrySet.removeAll(null);
        fail("Expected NullPointerException.");
      } catch (NullPointerException expected) {
      }
    } else {
      try {
        entrySet.removeAll(null);
        fail("Expected UnsupportedOperationException or NullPointerException.");
      } catch (UnsupportedOperationException | NullPointerException e) {
        // Expected.
      }
    }
    assertInvariants(map);

      fail("expected NullPointerException");
    } catch (NullPointerException expected) {
    }
  }

  public void testBuilderAddCopiesHandlesNullsCorrectly() {
    ImmutableMultiset.Builder<String> builder = ImmutableMultiset.builder();
    try {
      builder.addCopies(null, 2);
      fail("expected NullPointerException");
    } catch (NullPointerException expected) {
    }
  }

     * Returns {@link ChecksumAlgorithm} for given algorithm name, or throws if algorithm not supported.
     *
     * @throws ChecksumAlgorithmServiceException if asked algorithm name is not supported.
     * @throws NullPointerException if passed in name is {@code null}.
     */
    @Nonnull
    ChecksumAlgorithm select(@Nonnull String algorithmName);

    /**

  private enum ExceptionTypePolicy {

    /**
     * Exceptions should be {@link NullPointerException} or {@link UnsupportedOperationException}.
     */
    NPE_OR_UOE() {
      @Override
      public boolean isExpectedType(Throwable cause) {
        return cause instanceof NullPointerException
            || cause instanceof UnsupportedOperationException;
      }
    },

    /**

      fail();
    } catch (NullPointerException expected) {
    }

    try {
      ImmutableBiMap.of("one", 1, null, 2);
      fail();
    } catch (NullPointerException expected) {
    }
  }

  public void testOfNullValue() {
    try {
      ImmutableBiMap.of("one", null);
      fail();
    } catch (NullPointerException expected) {
    }

    try {

   *
   * @throws NullPointerException if {@code element} is null
   */
  public static <E> ImmutableList<E> of(E element) {
    return construct(element);
  }

  /**
   * Returns an immutable list containing the given elements, in order.
   *
   * @throws NullPointerException if any element is null
   */
  public static <E> ImmutableList<E> of(E e1, E e2) {

        final ClIllegalStateException clIllegalStateException = new ClIllegalStateException("hoge", new NullPointerException());
        assertThat(clIllegalStateException.getMessage(), is("hoge"));
        assertThat(clIllegalStateException.getCause(), instanceOf(NullPointerException.class));
    }

    /**
     * Test method for

   *
   * @throws NullPointerException if {@code element} is null
   * @since 6.0 (source-compatible since 2.0)
   */
  public static <E> ImmutableMultiset<E> of(E element) {
    return copyFromElements(element);
  }

  /**
   * Returns an immutable multiset containing the given elements, in order.
   *
   * @throws NullPointerException if any element is null