def is_up(self, member):
        raise NotImplementedError()
At least three header blocks can be received: informational, headers,
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/servicegroup/drivers/base.py/Driver.is_up--crossover with--dataset/ETHPy150Open python-hyper/hyper-h2/test/test_informational_responses.py/TestReceivingInformationalResponses.test_receiving_multiple_header_blocks