Save Config for Extreme SLX.

def save_config(
        self,
        cmd="copy running-config startup-config",
        confirm=True,
        confirm_response="y",
    ):
        """Save Config for Extreme SLX."""
        return super(ExtremeSlxSSH, self).save_config(
            cmd=cmd, confirm=confirm, confirm_response=confirm_response
        )