def get_cache_key(self, name):
        return '%s_%s' % (self.cache_prefix, urlquote(name))
Sample transform using the @ptransform_fn decorator.
dataset/ETHPy150Open jazzband/django-queued-storage/queued_storage/backends.py/QueuedStorage.get_cache_key--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/DataflowPythonSDK/google/cloud/dataflow/transforms/ptransform_test.py/SamplePTransform