def SetupContextCache(self):
ctx = tasklets.make_default_context()<EOL>tasklets.set_context(ctx)<EOL>ctx.set_cache_policy(True)<EOL>ctx.set_memcache_policy(True)<EOL>
Set up the context cache.

        We only need cache active when testing the cache, so the default behavior
        is to disable it to avoid misleading test results. Override this when
        needed.