/**
* Calculates and sets the extended presence information to add to the presence. The information
* to add contains the user's jid, affiliation and role.
*/
private void calculateExtendedInformation() {
ElementUtil.setProperty(extendedInformation, "x.item:jid", user.getAddress().toString());
ElementUtil.setProperty(extendedInformation, "x.item:affiliation", affiliation.toString());
ElementUtil.setProperty(extendedInformation, "x.item:role", role.toString());
}
