code: def _add_help_noop_and_quit_transitions(self):
          
          states = set()
          for state_name in self.state.known_states():
              if state_name not in ['new', 'finished']:
                  states.add(state_name)
          for state in states:
              self._add_state(state, 'NOOP',  state)
              self._add_state(state, 'HELP',  state)
              self._add_state(state, 'QUIT',  'finished')
docs: HELP, NOOP and QUIT should be possible from everywhere so we
          need to add these transitions to all states configured so far.