public VcardIq(IqType type, Jid to, Vcard vcard) : this(type, to) { this.Vcard = vcard; }
public VcardIq(IqType type, Jid to, Jid from, Vcard vcard) : this(type, to, from) { this.Vcard = vcard; }
public VcardIq(IqType type, Vcard vcard) : this(type) { this.Vcard = vcard; }