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 ) ; }
Returns an unmodifiable collection of the roster groups that this entry belongs to .