code: async def send_audio(self, url, user, options=None):
          
          tasks = [interface.send_audio(user, url, options) for _, interface in self.interfaces.items()]
          return [body for body in await asyncio.gather(*tasks)]
docs: send audio message
  
          :param url: link to the audio file
          :param user: target user
          :param options:
          :return: