uranusjr commented on PR #46415:
URL: https://github.com/apache/airflow/pull/46415#issuecomment-2636186625
Old signature:
```python
class MyOperatorLink(BaseOperatorLink):
def get_link(self, operator, dttm):
...
```
New signature:
```python
class MyOperatorLink(BaseOperatorLink):
def get_link(self, operator, *, ti_key):
...
```
Note that in the old signature, `dttm` is used by Airflow as a _positional_
argument, so the argument name in the function declaration may not be `dttm`.
In the new signature, however, the argument name must be `ti_key` (although it
may be non-keyword-only; `self, operator, ti_key` should be considered new
signature). So the deprecated signature detection rule should be **exactly
three positional arguments, the third one not named `ti_key`**.
Relevant documentation on operator extra link:
https://airflow.apache.org/docs/apache-airflow/stable/howto/define-extra-link.html
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