@TestSubtype
    public Mall<Outdoor>.Shop<Electronics> ownerTypeIsSubtype(
        Outlet<Outdoor>.Shop<Electronics> shop) {
      return isSubtype(shop);
    }

    @TestSubtype(suppressGetSupertype = true, suppressGetSubtype = true)
    public Mall<? extends Outdoor>.Shop<Electronics> ownerTypeIsSubtype_supertypeWithWildcard(
        Outlet<Outdoor>.Shop<Electronics> shop) {
      return isSubtype(shop);
    }

// trailing UTF-8-encoded code points contained in cutset.
func Trim(s []byte, cutset string) []byte {
	if len(s) == 0 {
		// This is what we've historically done.
		return nil
	}
	if cutset == "" {
		return s
	}
	if len(cutset) == 1 && cutset[0] < utf8.RuneSelf {
		return trimLeftByte(trimRightByte(s, cutset[0]), cutset[0])
	}
	if as, ok := makeASCIISet(cutset); ok {