def change_content_type(self, new_ctype, guess=False):
        self.container.change_object_content_type(self, new_ctype=new_ctype,
                guess=guess)
Create a self reference.
dataset/ETHPy150Open rackspace/pyrax/pyrax/object_storage.py/StorageObject.change_content_type--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/ext/db/__init__.py/SelfReferenceProperty