// GET: api/ToDoTasks/GetToDoTasks?Title=""&Description=""&IsCompleted={true,false}&IsStricktFilter={true,false}
        public IHttpActionResult GetToDoTask([FromUri] FilterModel filterModel)
        {
            if (!filterModel.IsValidFilter())
            {
                return(BadRequest(ModelState));
            }

            IEnumerable <ToDoTaskDTO> toDoTaskDTOs = _toDoTaskService.GetMultiple(filterModel);

            return(Ok(toDoTaskDTOs));
        }