Returns additional data for incorporation in the fingerprint.
(self)
| 547 | raise NotImplementedError |
| 548 | |
| 549 | def extra(self) -> str: |
| 550 | """Returns additional data for incorporation in the fingerprint.""" |
| 551 | return "" |
| 552 | |
| 553 | |
| 554 | class Copy(PreImage): |