https://github.com/apache/airflow/blob/main/airflow/cli/commands/task_command.py#L145
yield ti
        tis = list(_filter_tis_and_exclude_removed(self.get_dag(), tis))
        unfinished_tis = [t for t in tis if t.state in State.unfinished]
        finished_tis = [t for t in tis if t.state in State.finished]
        if unfinished_tis:
            schedulable_tis = [ut for ut in unfinished_tis if ut.state in SCHEDULEABLE_STATES]
            self.log.debug("number of scheduleable tasks for %s: %s task(s)", self, len(schedulable_tis))
            schedulable_tis, changed_tis, expansion_happened = self._get_ready_tis(
                schedulable_tis,
                finished_tis,
                session=session,
            )
            
            
            if expansion_happened:
                changed_tis = True
                new_unfinished_tis = [t for t in unfinished_tis if t.state in State.unfinished]
                finished_tis.extend(t for t in unfinished_tis if t.state in State.finished)
                unfinished_tis = new_unfinished_tis
        else:
            schedulable_tis = []
            changed_tis = False
        return TISchedulingDecision(
            tis=tis,
            schedulable_tis=schedulable_tis,
            changed_tis=changed_tis,
            unfinished_tis=unfinished_tis,
            finished_tis=finished_tis,
        )
    def notify_dagrun_state_changed(self, msg: str = ""):