/**
	 * implementation of after_migrate method that updates the migration log
	 *
	 * @param Model_Migration $migration the migration object that represents the data
	 * migration task that has just run
	 */
	protected function after_migrate(Model_Migration $migration)
	{
		$migration_log = ORM::factory('migration_log');
		$migration_log->add_entry(
			$migration->get_schema_version(),
			$migration->get_to_version(),
			$migration->get_status()
		);
	}