public async Task <ActionResult> Create([FromBody] Person person)
{
Guard.Against.NullOrWhiteSpace(person.FirstName, "firstName");
Guard.Against.NullOrWhiteSpace(person.LastName, "lastName");
var addedPerson = await personDataService.Add(person);
return(CreatedAtAction(nameof(Get), new { id = addedPerson.Id }, addedPerson));
}