uint offset, uint max_count, out uint total_matches, string sort_criteria, Cancellable? cancellable) throws Error
        uint offset, uint max_count, out uint total_matches, string sort_criteria, Cancellable? cancellable) throws Error
        Recursively searches for all media objects that satisfy the given search expression in this container.
| expression | the search expression or null for wildcard | 
| offset | zero-based index of the first object to return | 
| max_count | maximum number of objects to return | 
| total_matches | sets it to the actual number of objects that satisfy | 
| cancellable | optional cancellable for this operation. | 
| A list of matching media objects or null if no object matched. |