Controller without documentation

AddressController.cs

 public class AddressController : ApiController
    {
        public IEnumerable<AddressViewModel> Get()
        {
            return Addresses.Get();
        }

        [Route(Name = "GetAddress")]
        public AddressViewModel Get(int id)
        {
            return Addresses.Get(id);
        }

        // POST api/address
        [ResponseType(typeof(AddressViewModel))]
        public IHttpActionResult Post(AddressInputModel address)
        {
            if(ModelState.IsValid)
            {
                var id = Addresses.Add(address);
                var uri = new Uri(Url.Link("GetAddress", new { id }));
                return Created(uri, Addresses.Get(id));
            }

            return BadRequest(ModelState);
        }

        public void Put(int id, AddressInputModel address)
        {
            Addresses.Update(id, address);
        }

        public void Delete(int id)
        {
            Addresses.Remove(id);
        }
    }