public async Task<Person> Add(Person person)
        {
            _ctx.People.Add(person);

            await _ctx.SaveChangesAsync();

            return person;
        }
        public async Task<Person> Update(int id, Person person)
        {
            var orgPerson = await GetById(id);

            if (person == null)
            {
                return null;
            }

            orgPerson.Name = person.Name;
            orgPerson.Age = person.Age;

            orgPerson.Picture.Data = person.Picture.Data;

            await _ctx.SaveChangesAsync();

            return orgPerson;
        }