private Integer retrieveIdFromFullName(String fullName) throws GeneralException {
        String[] splitFullName = fullName.split(" ");
        var user = new User(splitFullName[0], splitFullName[1], splitFullName[2]);
        return userRepository.findByFirstNameAndMiddleNameAndLastName(
                user.firstName, user.middleName, user.lastName
        ).orElseThrow(() ->
                new GeneralException("Cannot find " + user.toString(), CANNOT_GET_USER_BY_FULL_NAME)
        ).getId();
    }