import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A GWT-only class only used by GWT emulations. It is used to consolidate the definitions of method
 * delegation to save code size.
 *
 * @author Hayward Chan
 */
// TODO: Make this class GWT serializable.
@ElementTypesAreNonnullByDefault
class ForwardingImmutableCollection<E> extends ImmutableCollection<E> {

  final transient Collection<E> delegate;