Sets whether address book sources within the collection should be enabled.
An ECollectionBackend running within the registry D-Bus service will automatically synchronize any address book sources it
maintains with the contacts_enabled property.
Calling this function from a registry service client has no effect until the change is submitted to the registry service through write, but there should rarely be any need for clients to call this.
| this | |
| contacts_enabled |
whether address book sources should be enabled |