if (self::isUnderscoreVariableName($var_name) === false) {
            $error = 'Member variable "%s" is not in valid underscore format';
            $data  = [$var_name];
            $phpcs_file->addError($error, $stack_ptr, 'MemberVarNotUnderscore', $data);
        } elseif (preg_match('|\d|', $var_name) === 1) {