void ProcessNickname(XmppPersonModel person, Nickname nick)
{
if (String.IsNullOrEmpty(nick.Value)) {
return;
}
// only rename person if it doesn't have a preset name
if (person.IdentityName == person.ID) {
var oldIdentityNameColored = person.IdentityNameColored;
var oldIdentityName = person.IdentityName;
person.IdentityName = nick.Value;
ProcessIdentityNameChanged(person, oldIdentityNameColored, oldIdentityName);
}
}