@DELETE
@Path("/{id}")
@Linkable(LinkableIds.LOAN_RETURN_ID)
public Response returnLoan(@PathParam("id") Integer id) {
Book book = bookRepository.getBookById(id);
book.returned();
return HateoasResponse.ok()
.location(makeLink(LinkableIds.LOANS_LIST_ID, Rels.LOANS)).build();
}
}