[ Version ( since = "3.6" ) ]
public BackendFactory? ref_backend_factory (string backend_name, string extension_name)
Returns the BackendFactory for "backend_name:extension_name
", or null if no such factory is registered.
The returned BackendFactory is referenced for thread-safety. Unreference the BackendFactory with unref when finished with it.
| this |
an DataFactory |
| backend_name |
a backend name |
| extension_name |
an extension name |
|
the BackendFactory for |