[ Version ( since = "0.15.5" ) ]
public bool contact_list_persists { get; }
If true, presence subscriptions (in both directions) on this connection are stored by the server or other infrastructure.
If false, presence subscriptions on this connection are not stored.
For this property to be valid, you must first call prepare_async with
the feature TP_CONNECTION_FEATURE_CONTACT_LIST_PROPERTIES or TP_CONNECTION_FEATURE_CONTACT_LIST.