def _SetExpiration(self, expiration):
    if expiration > (86400 * 30):
      self.expiration_time = expiration
    else:
      self.expiration_time = self._gettime() + expiration
Override this to enable ``find-one`` in the database
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/memcache/memcache_stub.py/CacheEntry._SetExpiration--crossover with--dataset/ETHPy150Open lonelycode/Mojo/Mojo/Backends/base_interface.py/CollectionModelInterface.find_one