code: def init_receivers(self, receivers):
          
          if not receivers:
              self.default_receiver = self.bot.file_helper
              return True
          if isinstance(receivers, list):
              self.default_receiver = receivers[0]
              for receiver in receivers:
                  if self.bot.puid_map:
                      self.receivers[receiver.puid] = receiver
                  self.receivers[receiver.name] = receiver
          else:
              self.default_receiver = receivers
              if self.bot.puid_map:
                  self.receivers[receivers.puid] = receivers
              self.receivers[receivers.name] = receivers
docs: 初始化 receivers