code: async def rename_conversation(self, rename_conversation_request):
          
          response = hangouts_pb2.RenameConversationResponse()
          await self._pb_request('conversations/renameconversation',
                                 rename_conversation_request, response)
          return response
docs: Rename a conversation.
  
          Both group and one-to-one conversations may be renamed, but the
          official Hangouts clients have mixed support for one-to-one
          conversations with custom names.