ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

  // Test generators.  To let the GWT test suite generator access them, they need to be
  // public named classes with a public default constructor.

  public static final class BytesAsListGenerator extends TestByteListGenerator {
    @Override
    protected List<Byte> create(Byte[] elements) {

                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

  // Test generators.  To let the GWT test suite generator access them, they need to be
  // public named classes with a public default constructor.

  public static final class LongsAsListGenerator extends TestLongListGenerator {
    @Override
    protected List<Long> create(Long[] elements) {

        item.id = 0L;
        assertEquals(0L, item.getId());
    }

    /**
     * Concrete implementation of DictionaryItem for testing purposes.
     * Since DictionaryItem is abstract, we need a concrete class to test it.
     */
    private static class TestDictionaryItem extends DictionaryItem {
        // Simple concrete implementation for testing
    }

      default:
        return new ImmutableEnumSet<>(set);
    }
  }

  /*
   * Notes on EnumSet and <E extends Enum<E>>:
   *
   * This class isn't an arbitrary ForwardingImmutableSet because we need to
   * know that calling {@code clone()} during deserialization will return an
   * object that no one else has a reference to, allowing us to guarantee
   * immutability. Hence, we support only {@link EnumSet}.
   */

        if (method.changeStatus == JApiChangeStatus.REMOVED) {
            return false
        }
        // @Override has source retention - so we need to peek into the sources
        return repository.isOverride(method)
    }

    Violation acceptOrReject(JApiCompatibility member, Violation rejection) {

    Method[] methods = getMostConcreteMethods(interfaceType);
    AccessibleObject.setAccessible(methods, true);
    for (Method method : methods) {
      // Interfaces can have default methods that aren't abstract.
      // No need to verify them.
      // Can't check isDefault() for Android compatibility.
      if (!Modifier.isAbstract(method.getModifiers())) {
        continue;
      }
      // The interface could be package-private or private.

    } catch (NoSuchMethodException e) {
      throw new AssertionError(e);
    }
  }

  private static @Nullable Field getInheritableThreadLocalsField() {
    if (isAndroid()) {
      /*
       * We need not worry about class unloading under Android. Plus, this approach doesn't always
       * work under Android.
       *
       * (Clearing inheritableThreadLocals could still be useful independent of class unloading, but

/kind feature

Optionally add one or more of the following kinds if applicable:
/kind api-change
/kind deprecation
/kind failing-test
/kind flake
/kind regression
-->

#### What this PR does / why we need it:

#### Which issue(s) this PR is related to:
<!--
Please link relevant issues to help with tracking.

To automatically close the linked issue(s) when this PR is merged,

  /**
   * Creates a new {@code Multimap} backed by {@code map}, whose internal value collections are
   * generated by {@code factory}. Most users should prefer {@link MultimapBuilder}, though a small
   * number of users will need this method to cover map or collection types that {@link
   * MultimapBuilder} does not support.
   *
   * <p><b>Warning: do not use</b> this method when the collections returned by {@code factory}

  /**
   * Creates a new {@code Multimap} backed by {@code map}, whose internal value collections are
   * generated by {@code factory}. Most users should prefer {@link MultimapBuilder}, though a small
   * number of users will need this method to cover map or collection types that {@link
   * MultimapBuilder} does not support.
   *
   * <p><b>Warning: do not use</b> this method when the collections returned by {@code factory}