WP_MS_Users_List_Table::get_sortable_columns()
Return
(array)
Source
File: wp-admin/includes/class-wp-ms-users-list-table.php
protected function get_sortable_columns() {
return array(
'username' => 'login',
'name' => 'name',
'email' => 'email',
'registered' => 'id',
);
}