/// <summary>
        ///  Get Equipments For Material
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public IResult GetEquipmentsForMaterial(string id)
        {
            var result = new Result
            {
                Operation = Operation.Read,
                Status    = Status.Success
            };

            try
            {
                var equipmentViewModels = new List <EquipmentViewModel>();
                var equipments          = _equipmentRepository.Filter(t => t.Material == ObjectId.Parse(id)).ToList();
                if (equipments.Any())
                {
                    equipmentViewModels = equipments.Select(t =>
                    {
                        var equipmentViewModel = new EquipmentViewModel();
                        equipmentViewModel.MapFromModel(t);
                        if (t.TechnicalSpecifications == null || !t.TechnicalSpecifications.Any())
                        {
                            return(equipmentViewModel);
                        }
                        var techSpecs = new List <TechSpecsViewModel>();
                        equipmentViewModel.TechnicalSpecifications = techSpecs.MapFromModel <TechnicalSpecification, TechSpecsViewModel>(t.TechnicalSpecifications);
                        return(equipmentViewModel);
                    }).ToList();
                }
                result.Body = equipmentViewModels;
            }
            catch (Exception e)
            {
                result.Message = e.Message;
                result.Status  = Status.Fail;
            }
            return(result);
        }