public function tables() {
		$table = new \cli\Table();
		$rows  = Model::$list;
		if ( ! $rows ) {
			\WP_CLI::error( 'No model is regsitered.' );
		}
		$table->setHeaders( [ 'Table Name', 'Model Class' ] );
		foreach ( $rows as $table_name => $class) {
			$table->addRow( [ $table_name, $class ] );
		}
		$table->display();
	}