*       {@link Object#equals(Object)}.
   *   <li>{@code false} in all other situations.
   * </ul>
   *
   * <p>This assumes that any non-null objects passed to this function conform to the {@code
   * equals()} contract.
   *
   * <p><b>Note:</b> this method is now unnecessary and should be treated as deprecated; use {@link
   * java.util.Objects#equals} instead.
   */

 * additional documentation, including:
 *
 * <ul>
 *   <li><a
 *       href="https://github.com/google/guava/wiki/GraphsExplained#equals-hashcode-and-graph-equivalence">
 *       {@code equals()}, {@code hashCode()}, and graph equivalence</a>
 *   <li><a href="https://github.com/google/guava/wiki/GraphsExplained#synchronization">
 *       Synchronization policy</a>

  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object == this) {
      return true;
    } else if (object instanceof RegularContiguousSet) {
      RegularContiguousSet<?> that = (RegularContiguousSet<?>) object;
      if (this.domain.equals(that.domain)) {
        return this.first().equals(that.first()) && this.last().equals(that.last());
      }
    }

   *
   * <ul>
   *   <li>Its execution does not cause any observable side effects.
   *   <li>The computation is <i>consistent with equals</i>; that is, {@link Objects#equals
   *       Objects.equals}{@code (a, b)} implies that {@code Objects.equals(function.apply(a),
   *       function.apply(b))}.
   * </ul>
   *
   * @throws NullPointerException if {@code input} is null and this function does not accept null

  public void testEquals_self() {
    assertTrue("An Object should be equal to itself.", collection.equals(collection));
  }

  // Comparisons to null *are* defined.
  @SuppressWarnings("UndefinedEquals")
  public void testEquals_null() {
    // noinspection ObjectEqualsNull
    assertFalse("An object should not be equal to null.", collection.equals(null));
  }

  // A collection should essentially never be equal to a non-collection.

    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Dependency().equals(null));

        new Dependency().equals(new Dependency());
    }

    @Test
    void testEqualsIdentity() {
        Dependency thing = new Dependency();
        assertTrue(thing.equals(thing), "Expected " + thing + " to equal " + thing);
    }

    @Test
    void testToStringNullSafe() {

    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new DistributionManagement().equals(null));

        new DistributionManagement().equals(new DistributionManagement());
    }

    @Test
    void testEqualsIdentity() {
        DistributionManagement thing = new DistributionManagement();
        assertTrue(thing.equals(thing), "Expected " + thing + " to equal " + thing);
    }

    @Test

    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Exclusion().equals(null));

        new Exclusion().equals(new Exclusion());
    }

    @Test
    void testEqualsIdentity() {
        Exclusion thing = new Exclusion();
        assertTrue(thing.equals(thing), "Expected " + thing + " to equal " + thing);
    }

    @Test
    void testToStringNullSafe() {

        new Plugin().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Plugin().equals(null));

        new Plugin().equals(new Plugin());
    }

    @Test
    void testEqualsIdentity() {
        Plugin thing = new Plugin();
        assertTrue(thing.equals(thing), "Expected " + thing + " to equal " + thing);
    }

    @Test
    void testToStringNullSafe() {

        new Profile().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Profile().equals(null));

        new Profile().equals(new Profile());
    }

    @Test
    void testEqualsIdentity() {
        Profile thing = new Profile();
        assertTrue(thing.equals(thing), "Expected " + thing + " to equal " + thing);
    }

    @Test
    void testToStringNullSafe() {