@Test
void parse_permission_empty() {

    var permissions = new HashMap<String, Object>();
    parser.parse(Empty.class.getAnnotation(Permission.class), permissions);
    
    var permission = (Map<String, Object>) permissions.get("e.f");
    
    assertEquals(1, permissions.size());
    assertEquals(1, permission.size());
    assertEquals("op", permission.get("default"));
}