code: def cmd_gopro_status(self, args):
          '''show gopro status'''
          master = self.master
          if 'GOPRO_HEARTBEAT' in master.messages:
              print(master.messages['GOPRO_HEARTBEAT'])
          else:
              print("No GOPRO_HEARTBEAT messages"f cmd_gopro_status(self, args):
          '''show gopro status'''
          master = self.master
          if 'GOPRO_HEARTBEAT' in master.messages:
              print(master.messages['GOPRO_HEARTBEAT'])
          else:
              print("No GOPRO_HEARTBEAT messages")
docs: show gopro status