docs: @Nonnull
      @CheckReturnValue
      public static <T, R> LifecycleTransformer<T> bindUntilEvent(@Nonnull final Observable<R> lifecycle,
                                                                  @Nonnull final R event) {
          checkNotNull(lifecycle, "lifecycle == null");
          checkNotNull(event, "event == null");
          return bind(takeUntilEvent(lifecycle, event));
      }