code: def delete(self, key):
      '''Removes the object named by `key`.
         Writes to both ``cache_datastore`` and ``child_datastore``.
      '''
      self.cache_datastore.delete(key)
      self.child_datastore.delete(keyf delete(self, key):
      '''Removes the object named by `key`.
         Writes to both ``cache_datastore`` and ``child_datastore``.
      '''
      self.cache_datastore.delete(key)
      self.child_datastore.delete(key)
docs: Removes the object named by `key`.
         Writes to both ``cache_datastore`` and ``child_datastore``.