/**
* Returns an unmodifiable collection of the roster groups that this entry belongs to.
*
* @return an iterator for the groups this entry belongs to.
*/
public Collection<RosterGroup> getGroups() {
List<RosterGroup> results = new ArrayList<RosterGroup>();
// Loop through all roster groups and find the ones that contain this
// entry. This algorithm should be fine
for (RosterGroup group : roster.getGroups()) {
if (group.contains(this)) {
results.add(group);
}
}
return Collections.unmodifiableCollection(results);
}
