/** * Tests whether all keys of {@link Label}s are known to {@link LabelsManager}. * * @param keys list of keys to be tested * @return whether all keys are known to {@link LabelsManager} */ protected boolean hasAllLabels(Iterable<Key> keys) { boolean hasAll = true; for (Key key : keys) { if (Managers.LABELS_MANAGER.getLabelByKey(key) == null) { hasAll = false; } } return hasAll; }