Executes the batch.
This operation happens asynchronously, when finished callback will be executed.
| this |
A `TrackerBatch` |
| cancellable |
Optional [type@Gio.Cancellable] |
| callback |
User-defined [type@Gio.AsyncReadyCallback] to be called when the asynchronous operation is finished. |
| user_data |
User-defined data to be passed to |