def get_hostname(self, module, version, instance=None):
    raise NotImplementedError()
restores state from disk
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/api/request_info.py/Dispatcher.get_hostname--crossover with--dataset/ETHPy150Open StorjOld/downstream-farmer/downstream_farmer/utils.py/restore