box /
spout
| A | ↘ | B | Style got worse |
| ⇢ | A | StyleRegistry::hasSerializedStyleAlreadyBeenRegist... added | |
| ⇢ | A | Style::setRegistered() added | |
| ⇢ | A | Style::isRegistered() added | |
| ⇢ | A | Style::register() added |
