I couldn't find any official documentation specifying what each parameter to a `sla_miss_callback` callable are. This would be a great addition to know how to properly format the messages sent.
airflow/models/dag.py
return self._dag_id
    @dag_id.setter
    def dag_id(self, value: str) -> None:
        self._dag_id = value
    @property
    def full_filepath(self) -> str:
        """:meta private:"""
        warnings.warn(
            "DAG.full_filepath is deprecated in favour of fileloc",
            DeprecationWarning,
            stacklevel=2,
        )
        return self.fileloc
    @full_filepath.setter
    def full_filepath(self, value) -> None:
        warnings.warn(
            "DAG.full_filepath is deprecated in favour of fileloc",
            DeprecationWarning,
            stacklevel=2,
        )
        self.fileloc = value
    @property
    def concurrency(self) -> int: