@DemoPermissionCheck(DemoPermission.DEPARTMENT_CREATE)
public void createDepartment(String departmentName) {
Department departmentByName = data.getDepartmentByName(departmentName);
if (departmentByName != null) {
throw new DuplicateDepartmentException();
}
Department department = new Department();
department.setName(departmentName);
data.createDepartment(department);
}