private final AnInterface i;

    public HasAnInterface(AnInterface i) {
      this.i = i;
    }

    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj instanceof HasAnInterface) {
        HasAnInterface that = (HasAnInterface) obj;
        return i.equals(that.i);
      } else {
        return false;
      }
    }

    @Override
    public int hashCode() {

    public C apply(@ParametricNullness A a) {
      return g.apply(f.apply(a));
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof FunctionComposition) {
        FunctionComposition<?, ?, ?> that = (FunctionComposition<?, ?, ?>) obj;
        return f.equals(that.f) && g.equals(that.g);
      }
      return false;
    }

    @Override
    public int hashCode() {

        @Override
        public int size() {
          return adjacentNodeValues.size();
        }

        @Override
        public boolean contains(@CheckForNull Object obj) {
          return adjacentNodeValues.containsKey(obj);
        }
      };
    }
  }

  @Override
  public Set<N> predecessors() {
    return new AbstractSet<N>() {
      @Override

  /** Test proper handling of case where an object is not equal to itself */
  public void testNonReflexiveEquals() {
    Object obj = new NonReflexiveObject();
    equalsTester.addEqualityGroup(obj);
    try {
      equalsTester.testEquals();
    } catch (AssertionFailedError e) {
      assertErrorMessage(e, obj + " must be Object#equals to itself");
      return;
    }
    fail("Should get non-reflexive error");
  }

    }

    @Override
    public int hashCode() {
      return ~predicate.hashCode();
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof NotPredicate) {
        NotPredicate<?> that = (NotPredicate<?>) obj;
        return predicate.equals(that.predicate);
      }
      return false;
    }

    @Override
    public String toString() {

        UseIterable<? extends CharSequence> obj) {
      return isSubtype(obj);
    }

    @TestSubtype(suppressGetSupertype = true, suppressGetSubtype = true)
    public UseSerializableIterable<? extends Serializable>
        implicitTypeBoundIsSubtypeOfPartialExplicitTypeBound(UseSerializableIterable<?> obj) {
      return isSubtype(obj);
    }

    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (NativeTypeVariableEquals.NATIVE_TYPE_VARIABLE_ONLY) {
        // equal only to our TypeVariable implementation with identical bounds
        if (obj != null
            && Proxy.isProxyClass(obj.getClass())
            && Proxy.getInvocationHandler(obj) instanceof TypeVariableInvocationHandler) {

   * guarantees {@code strictfp}-like semantics.)
   */
  @Override
  public boolean equals(@CheckForNull Object obj) {
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    PairedStats other = (PairedStats) obj;
    return xStats.equals(other.xStats)
        && yStats.equals(other.yStats)

      return new OrderedPermutationIterator<E>(inputList, comparator);
    }

    @Override
    public boolean contains(@CheckForNull Object obj) {
      if (obj instanceof List) {
        List<?> list = (List<?>) obj;
        return isPermutation(inputList, list);
      }
      return false;
    }

    @Override
    public String toString() {

    int index = 0;
    for (Object obj : toTest) {
      String name = "toTest[" + index + "] (" + obj + ")";
      assertWithMessage(name).that(Lists.indexOfImpl(toTest, obj)).isEqualTo(expected[index]);
      index++;
    }
  }

  private void checkLastIndexOf(List<?> toTest, int[] expected) {
    int index = 0;
    for (Object obj : toTest) {
      String name = "toTest[" + index + "] (" + obj + ")";