docs: @PatchMapping("/employees/{id}")
  	public ResponseEntity<?> partiallyUpdateEmployee( //
  			@RequestBody EntityModel<Employee> employee, @PathVariable Integer id)
  	// end::patch[]
  	{
  
  		Employee newEmployee = EMPLOYEES.get(id);
  
  		if (employee.getContent().getName() != null) {
  			newEmployee = newEmployee.withName(employee.getContent().getName());
  		}
  
  		if (employee.getContent().getRole() != null) {
  			newEmployee = newEmployee.withRole(employee.getContent().getRole());
  		}
  
  		EMPLOYEES.put(id, newEmployee);
  
  		return ResponseEntity //
  				.noContent() //
  				.location(findOne(id).getRequiredLink(IanaLinkRelations.SELF).toUri()) //
  				.build();
  	}