used to send async notifications
        :param method:
        :param method_args:
        :param method_kwargs:
        :param done_callback:
        :param done_kwargs:
        :param loop:
        :return:

def submit(self, method, method_args=(), method_kwargs={}, done_callback=None, done_kwargs={}, loop=None):
        '''
        used to send async notifications
        :param method:
        :param method_args:
        :param method_kwargs:
        :param done_callback:
        :param done_kwargs:
        :param loop:
        :return:
        '''
        _future = self.pool.submit(method, *method_args, **method_kwargs)
        self.current_id += 1
        if done_callback:
            _future.add_done_callback(lambda _f:done_callback(_f,loop,**done_kwargs))#done kwargs, hardcoded kwargs
        self.request_pool[self.current_id] = _future
        return self.current_id, _future