/** @return A non-<code>null</code> but maybe empty set with all currently logged in user IDs. */ @Nonnull @ReturnsMutableCopy public Set<String> getAllLoggedInUserIDs() { m_aRWLock.readLock().lock(); try { return CollectionHelper.newSet(m_aLoggedInUsers.keySet()); } finally { m_aRWLock.readLock().unlock(); } }
@Nonnull @ReturnsMutableCopy public Set<KEYTYPE> getAllAttributeNames() { return CollectionHelper.newSet(m_aAttrs.keySet()); }