private static ExecutionResult Validate(ExecutionOptions executionOptions, params UserAuthRole[] roles)
        {
            try
            {
                executionOptions.ValidateRole(roles); // Auth. filter
            }
            catch (Exception e)
            {
                ExecutionResult er = new() { Errors = new() };
                er.Errors.Add(new ExecutionError(e.Message, e));
                return(er);
            }

            return(null);
        }
    }