public async Task UpdateCustomerTest()
{
//arrange
var requestId = new GetCustomerRequest {
IdFilter = 3
};
CustomerDto toUpdate = _target.GetCustomer(requestId);
//act
toUpdate.FirstName = "Anna-Lena";
Empty emptyUpdate = _target.UpdateCustomer(toUpdate);
// assert
toUpdate = _target.GetCustomer(requestId);
Assert.Equal("Anna-Lena", toUpdate.FirstName);
}