public static function isRealModuleField(string $module, string $field) : bool
    {
        $fields = self::getRealModuleFields($module);

        // If we couldn't get the migration, we cannot verify if the
        // field is real or not.  To avoid unnecessary fails, we
        // assume that it's real.
        if (empty($fields)) {
            return true;
        }

        return in_array($field, $fields);
    }