Noptin_Automation_Rules_Table::get_sortable_columns()

	public function get_sortable_columns() {
		$sortable = array(
			'id' => array( 'id', true ),
		);

		/**
		 * Filters the sortable columns in the automation rules table.
		 *
		 * @param array $sortable An array of sortable columns.
		 */
		return apply_filters( 'manage_noptin_automation_rules_sortable_table_columns', $sortable );
	}