public async Task CreateAsyncStorageFailsReturnsStorageFailedOperationResult()
        {
            var request = new ConfigChangeRequest {
                Name = "name", Value = "value"
            };
            var context = new CommandContext(CommandTypes.Create, request, model);

            model.StoreEntityAsync(Arg.Any <ConfigEntity>()).Returns(false);
            var result = await AllCommands.CreateAsync(context);

            Assert.False(result.IsSuccess);
            Assert.Null(result.Result);
            Assert.Equal(ResultType.Forbidden, result.ResultType);
        }