* the symmetry of {@code equals}. Custom definitions of equality are usually based on an interface,
 * such as {@code Set} or {@code List}, so that the implementation of {@code equals} can cast the
 * object being tested for equality to the custom interface. {@code ForwardingObject} implements no

 * interface. It does not permit null keys or values.
 *
 * <p><b>Note:</b> by default, the returned map uses equality comparisons (the {@link Object#equals
 * equals} method) to determine equality for keys or values. However, if {@link #weakKeys} was
 * specified, the map uses identity ({@code ==}) comparisons instead for keys. Likewise, if {@link

 * to the provided {@code standardEquals} method.
 *
 * <p>Each of the {@code standard} methods, where appropriate, use {@link Objects#equal} to test
 * equality for both keys and values. This may not be the desired behavior for map implementations
 * that use non-standard notions of key equality, such as the entry of a {@code SortedMap} whose
 * comparator is not consistent with {@code equals}.
 *

  }

  /*
   * Tests for Predicates.alwaysTrue().
   */

  public void testAlwaysTrue_apply() {
    assertEvalsToTrue(Predicates.alwaysTrue());
  }

  public void testAlwaysTrue_equality() throws Exception {
    new EqualsTester()
        .addEqualityGroup(TRUE, Predicates.alwaysTrue())
        .addEqualityGroup(isOdd())
        .addEqualityGroup(Predicates.alwaysFalse())
        .testEquals();
  }

  /**
   * Sets the default value for {@code type}. The default value isn't used in testing {@link
   * Object#equals} because more than one sample instances are needed for testing inequality. To set
   * distinct values for equality testing, use {@link #setDistinctValues} instead.
   */
  @CanIgnoreReturnValue
  public <T> ClassSanityTester setDefault(Class<T> type, T value) {
    nullPointerTester.setDefault(type, value);

    return super.put(key, value);
  }

  /**
   * Compares the specified object to this multimap for equality.
   *
   * <p>Two {@code SetMultimap} instances are equal if, for each key, they contain the same values.
   * Equality does not depend on the ordering of keys or values.
   */
  @Override
  public boolean equals(@CheckForNull Object object) {
    return super.equals(object);

 * the symmetry of {@code equals}. Custom definitions of equality are usually based on an interface,
 * such as {@code Set} or {@code List}, so that the implementation of {@code equals} can cast the
 * object being tested for equality to the custom interface. {@code ForwardingObject} implements no

 *   <dt>{@link ListMultimap}
 *   <dd>An extension of {@link Multimap} which permits duplicate entries, supports random access of
 *       values for a particular key, and has <i>partially order-dependent equality</i> as defined
 *       by {@link ListMultimap#equals(Object)}. {@code ListMultimap} takes its name from the fact
 *       that the {@linkplain ListMultimap#get collection of values} associated with a given key

  }

  /*
   * Tests for Predicates.alwaysTrue().
   */

  public void testAlwaysTrue_apply() {
    assertEvalsToTrue(Predicates.alwaysTrue());
  }

  public void testAlwaysTrue_equality() throws Exception {
    new EqualsTester()
        .addEqualityGroup(TRUE, Predicates.alwaysTrue())
        .addEqualityGroup(isOdd())
        .addEqualityGroup(Predicates.alwaysFalse())
        .testEquals();
  }

 * to the provided {@code standardEquals} method.
 *
 * <p>Each of the {@code standard} methods, where appropriate, use {@link Objects#equal} to test
 * equality for both keys and values. This may not be the desired behavior for map implementations
 * that use non-standard notions of key equality, such as the entry of a {@code SortedMap} whose
 * comparator is not consistent with {@code equals}.
 *