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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_entity(self, entity, default=None):
 """Gets an entity object from the ACL. :type entity: :class:`_ACLEntity` or string :param entity: The entity to get lookup in the ACL. :type default: anything :param default: This value will be returned if the entity doesn't exist. :rtype: :class:`_ACLEntity` :returns: The corresponding entity or the value provided to ``default``. """

        self._ensure_loaded()
        return self.entities.get(str(entity), default)