public void removeLabel(Label label) {
if (LOG.isDebugEnabled()) {
LOG.debug("removeLabel(label " + label + ")");
}
if (label == null) {
throw new IllegalArgumentException("Illegal topic argument passed!");
}
label.setDiscussionTopic(null);
labels.remove(label);
}
public void addLabel(Label label) {
if (LOG.isDebugEnabled()) {
LOG.debug("addLabel(label " + label + ")");
}
if (label == null) {
throw new IllegalArgumentException("topic == null");
}
label.setDiscussionTopic(this);
labels.add(label);
}
