wp admin includes import.php Notes - WordPress-Thinstall/wordpress-develop GitHub Wiki

interface AdminImportInterface {
    function get_importers();
    function _usort_by_first_member( $a, $b );
    function register_importer( $id, $name, $description, $callback );
    function wp_import_cleanup( $id );
    function wp_import_handle_upload();
    function wp_get_popular_importers();
}