code: def set_active_state(self, state_name):
          
          _LOGGER.info('Setting ZoneMinder run state to state %s', state_name)
          return self._zm_request('GET',
                                  'api/states/change/{}.json'.format(state_name),
                                  timeout=120)
docs: Set the ZoneMinder run state to the given state name, via ZM API.
  
          Note that this is a long-running API call; ZoneMinder changes the state
          of each camera in turn, and this GET does not receive a response until
          all cameras have been updated. Even on a reasonably powerful machine,
          this call can take ten (10) or more seconds **per camera**. This method
          sets a timeout of 120, which should be adequate for most users.