def get_session(self, request, key):
        raise NotImplementedError
Implement C{<=} operator between two L{DelayedCall} instances.
dataset/ETHPy150Open quantmind/lux/lux/extensions/rest/backends/mixins.py/SessionBackendMixin.get_session--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/internet/base.py/DelayedCall.__le__