wp-admin/includes/class-wp-media-list-table.php:429array<string, protected function get_sortable_columns() { return array( 'title' => array( 'title', false, _x( 'File', 'column name' ), __( 'Table ordered by File Name.' ) ), 'author' => array( 'author', false, __( 'Author' ), __( 'Table ordered by Author.' ) ), 'parent' => array( 'parent', false, _x( 'Uploaded to', 'column name' ), __( 'Table ordered by Uploaded To.' ) ), 'comments' => array( 'comment_count', __( 'Comments' ), false, __( 'Table ordered by Comments.' ) ), 'date' => array( 'date', true, __( 'Date' ), __( 'Table ordered by Date.' ), 'desc' ), ); }One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
array to array<string,.verified against sourcesrc/wp-admin/includes/class-wp-media-list-table.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.