/**
* Adds a {@link DataElement}. After the element has been successfully added all {@link
* DataListener DataListeners} will be informed.
*
* @param element DataElement to be added.
* @throws IllegalArgumentException if <tt>element</tt> is not of the correct type which will be
* checked by the method {@link #isValid}.
*/
public void addElement(DataElement element) {
if (isValid(element)) {
_container.addElement(element);
element.setContainer(this);
notifyListeners(DataEvent.createAddEvent(this));
} else {
throwException(ADD, element);
}
}
