class_docstr: SumoTLManager is responsible for the management of the sumo traffic lights (i.e., keeps control
  of the current program, phase, ...)
class_docstr_tok: ["SumoTLManager","is","responsible","for","the","management","of","the","sumo","traffic","lights","(","i.e.",",","keeps","control","of","the","current","program",",","phase",",","...",")"]
docstr: Switch off all traffic lights.
docstr_tok: ["Switch","off","all","traffic","lights","."]
code: def switch_off(self):
      """
      Switch off all traffic lights.
      """
      for tlid, link_index in self.get_all_signals():
          traci.trafficlight.setLinkState(
              tlid, link_index, SumoSignalState.OFF
          )
      self._off = True
  
imports: import collections
  import enum
  import logging
  import os
  import carla
  import sumolib
  import traci
  from .constants import INVALID_ACTOR_ID
  import lxml.etree
label_desc: Use image node_id 9 for calling the SumoTLManager obj's underlying member method code with example usage: obj.switch_off() without return types