def _flush(self):
        self._flushed = True
Helper method for vk_requests.auth.VKSession initialization
dataset/ETHPy150Open ipython/ipython-py3k/IPython/zmq/kernelmanager.py/SubSocketChannel._flush--crossover with--dataset/ETHPy150Open prawn-cake/vk-requests/vk_requests/auth.py/BaseAuthAPI.is_token_required