[ Version ( since = "0.15.5" ) ]
public bool can_change_contact_list { get; }
If true, presence subscription and publication can be changed using the RequestSubscription, AuthorizePublication and RemoveContacts methods.
Rational: link-local XMPP, presence is implicitly published to everyone in the local subnet, so the user cannot control their presence publication.
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.