public static AclOperation fromCode(byte code) {
        AclOperation operation = CODE_TO_VALUE.get(code);
        if (operation == null) {
            return UNKNOWN;
        }
        return operation;
    }
Return the AclOperation with the provided code or `AclOperation.UNKNOWN` if one cannot be found.
clients/src/main/java/org/apache/kafka/common/acl/AclOperation.java