var removeKey func(s []byte) bool

	// Copy if big number of compares...
	if len(keys) > 5 && sz > 5 {
		mKeys := make(map[string]struct{}, len(keys))
		for _, key := range keys {
			mKeys[key] = struct{}{}
		}
		removeKey = func(s []byte) bool {
			_, ok := mKeys[string(s)]
			return ok
		}
	} else {
		removeKey = func(s []byte) bool {
			return slices.Contains(keys, string(s))
		}