code: async def get_group_conversation_url(self,
                                           get_group_conversation_url_request):
          
          response = hangouts_pb2.GetGroupConversationUrlResponse()
          await self._pb_request('conversations/getgroupconversationurl',
                                 get_group_conversation_url_request,
                                 response)
          return response
docs: Get URL to allow others to join a group conversation.