docs: @PostMapping("/employees")
  	public ResponseEntity<?> newEmployee(@RequestBody EntityModel<Employee> employee) {
  
  		int newEmployeeId = EMPLOYEES.size();
  		EMPLOYEES.put(newEmployeeId, employee.getContent());
  
  		Link link = linkTo(methodOn(getClass()).findOne(newEmployeeId)).withSelfRel().expand();
  
  		return ResponseEntity.created(link.toUri()).build();
  	}