- name: test start
  block:
  - name: test A
    ....
  rescue:
  - name: test N
    ...

task A in block and task B in rescue.

class CallbackModule(CallbackBase):
    def v2_playbook_on_task_start(self, task, is_conditional):
      ```
      I want to get this task whether in block or rescue
      ```

I think may be can get tasks information from Block class, but not success.