Assign a collection to this alias.
Aliases help determine well known collections, such as 'default'.
If this is null, then [func@Service.get_sync] will be called to get the default [class@Service] proxy.
This method may block and should not be used in user interface threads.
| this |
a secret service object |
| alias |
the alias to assign the collection to |
| collection |
the collection to assign to the alias |
| cancellable |
optional cancellation object |
|
true if successful |