wp-admin/includes/class-wp-list-table.php:1765Handles an unknown column.
$itemobject|array$column_namestring protected function column_default( $item, $column_name ) {}Introduced in 4.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-wp-list-table.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.