@base.resource(v3.Channels)
    def channels(self):
        return v3.Channels(self)
Test if m2m field with explicit intermediary is synced properly.
dataset/ETHPy150Open ducksboard/libsaas/libsaas/services/youtube/service.py/YouTube.channels--crossover with--dataset/ETHPy150Open zlorf/django-synchro/synchro/tests.py/M2MSynchroTests.test_intermediary_m2m