[ Version ( since = "3.10" ) ]
public DataBook? ref_data_book ()
Returns the DataBook for this.
The DataBook is essentially the glue between incoming D-Bus requests and this's native API.
An DataBook should be set only once after this is first created. If an DataBook has not yet been set, the function returns null.
The returned DataBook is referenced for thread-safety and must be unreferenced with unref when finished with it.
| this |
an BookBackend |
|
an DataBook, or null |