// setToTest should throw when it calls equals(), or equals is called on it, except for itself
    assertThat(setToTest).isEqualTo(setToTest);
    assertThrows(IllegalStateException.class, () -> setToTest.equals(wrappedSet));
    assertThrows(IllegalStateException.class, () -> setToTest.equals(copyOfWrappedSet));
    assertThrows(IllegalStateException.class, () -> setToTest.equals(copyOfModifiedSet));

                        && Objects.equals(extension, that.extension)
                        && Objects.equals(type, that.type)
                        && Objects.equals(coordinateString, that.coordinateString)
                        && Objects.equals(scope, that.scope)
                        && Objects.equals(exclusions, that.exclusions);
            }

            @Override
            public int hashCode() {

    }
  }

  private interface Equals {
    @Override
    boolean equals(@Nullable Object obj);

    @Override
    int hashCode();

    @Override
    String toString();
  }

  private static class NoDelegateToEquals implements Equals {

    private final Equals delegate;

    NoDelegateToEquals(Equals delegate) {
      this.delegate = delegate;
    }

        assertTrue(item1.equals(item3));

        // Different input value
        assertFalse(item1.equals(item4));

        // Null and different class
        assertFalse(item1.equals(null));
        assertFalse(item1.equals("string"));
        assertFalse(item1.equals(new Object()));
    }

    @Test
    public void test_equals_withNewInput() {

    }

    @Override
    public boolean equals(@Nullable Object other) {
      if (!(other instanceof ParameterizedType)) {
        return false;
      }
      ParameterizedType that = (ParameterizedType) other;
      return getRawType().equals(that.getRawType())
          && Objects.equals(getOwnerType(), that.getOwnerType())
          && Arrays.equals(getActualTypeArguments(), that.getActualTypeArguments());
    }

        // Different input
        assertFalse(item1.equals(item3));

        // Same id and input
        assertTrue(item1.equals(item4));

        // Null object
        assertFalse(item1.equals(null));

        // Different class
        assertFalse(item1.equals("word"));

        // Symmetry
        assertTrue(item1.equals(item2));
        assertTrue(item2.equals(item1));
    }

    assertFalse(control("foo", 1).equals(entry("foo", 2)));
    assertFalse(entry("foo", 1).equals(control("bar", 1)));
    assertFalse(entry("foo", 1).equals(new Object()));
    assertFalse(entry("foo", 1).equals(null));
  }

  public void testEqualsNull() {
    assertEquals(control(NE, 1), entry(NE, 1));
    assertFalse(control(NE, 1).equals(entry(NE, 2)));
    assertFalse(entry(NE, 1).equals(control("bar", 1)));

      return target.equals(o);
    }

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

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

        assertTrue(stemmerOverrideItem1.equals(stemmerOverrideItem1));
        assertTrue(stemmerOverrideItem1.equals(new StemmerOverrideItem(1, "aaa", "a")));
        assertTrue(stemmerOverrideItem1.equals(new StemmerOverrideItem(2, "aaa", "a")));
        assertFalse(stemmerOverrideItem1.equals(new StemmerOverrideItem(1, "aaa", "b")));
        assertFalse(stemmerOverrideItem1.equals(new StemmerOverrideItem(2, "bbb", "a")));

   * example, {@code [] < [1L] < [1L, 2L] < [2L] < [1L << 63]}.
   *
   * <p>The returned comparator is inconsistent with {@link Object#equals(Object)} (since arrays
   * support only identity equality), but it is consistent with {@link Arrays#equals(long[],
   * long[])}.
   *
   * <p><b>Java 9+ users:</b> Use {@link Arrays#compareUnsigned(long[], long[])
   * Arrays::compareUnsigned}.
   */