private Task <ManureStorageViewModel> GetManureStorageSystemAsync()
        {
            var generatedManures = new List <GeneratedManure>
            {
                new GeneratedManure
                {
                    animalId          = 1,
                    animalSubTypeId   = 1,
                    animalSubTypeName = "Cow, including calf to weaning",
                    ManureType        = ManureMaterialType.Solid
                },
                new GeneratedManure
                {
                    animalId          = 1,
                    animalSubTypeId   = 3,
                    animalSubTypeName = "Heavy Feeders",
                    ManureType        = ManureMaterialType.Solid
                },
                new GeneratedManure
                {
                    animalId          = 2,
                    animalSubTypeId   = 4,
                    animalSubTypeName = "Calves (0 to 3 months old)",
                    ManureType        = ManureMaterialType.Liquid
                },
                new GeneratedManure
                {
                    animalId          = 2,
                    animalSubTypeId   = 9,
                    animalSubTypeName = "Milking Cow",
                    ManureType        = ManureMaterialType.Liquid
                }
            };

            if (!_userData.GetGeneratedManures().Any())
            {
                foreach (var generatedManure in generatedManures)
                {
                    _userData.AddGeneratedManure(generatedManure);
                }
            }

            var manureStorageVm = new ManureStorageViewModel
            {
                GeneratedManures     = _userData.GetGeneratedManures(),
                ManureStorageSystems = _userData.GetStorageSystems()
            };

            return(Task.FromResult(manureStorageVm));
        }