<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def restore(self, url):
 """Restore the remote database from the URL of a backup."""

        self._run(
            [
                "heroku",
                "pg:backups:restore",
                "{}".format(url),
                "DATABASE_URL",
                "--app",
                self.name,
                "--confirm",
                self.name,
            ]
        )