public async Task <CompanyViewModel> Create(CreateCompanyCommand command)
        {
            //arrange
            const int expectedNumberOfErrors = 0;

            //act
            var response = await appService.Create(command);

            //assert
            command.ValidateModelAnnotations().Count.Should().Be(expectedNumberOfErrors);
            response.Id.Should().NotBe(Guid.Empty);
            response.Name.Should().Be(command.Name);

            return(response);
        }