| 26 | |
| 27 | @dataclass |
| 28 | class Branch: |
| 29 | path: CallKey = () |
| 30 | _counter: int = 0 |
| 31 | |
| 32 | def next_slot(self) -> int: |
| 33 | slot = self._counter |
| 34 | self._counter += 1 |
| 35 | return slot |
| 36 | |
| 37 | |
| 38 | _current: contextvars.ContextVar[Branch] = contextvars.ContextVar("workflow_branch") |