[ NoAccessorMethod ]
[ Version ( since = "0.15.6" ) ]
public Contact group_self_contact { owned get; }
If this channel is a group and TP_CHANNEL_FEATURE_CONTACTS has been prepared, and the user is a member of the group, the
Contact representing them in this group.
Otherwise, the result may be either a contact representing the user, or null.
Change notification is via notify::group-self-contact.