@SuppressWarnings("unchecked")
public <T extends DocumentLabel> ArrayList<T> getHumanLabels(Class<T> classFilter) {
ArrayList<T> items = new ArrayList<T>();
for (DocumentLabel label : labels) {
if (label.isHumanLabel() && classFilter.isAssignableFrom(label.getClass()))
items.add((T) label);
}
return items;
}
public void addLabel(DocumentLabel label) {
labels.add(label);
if (label.isHumanLabel()) humanLabelCount++;
}