/**
* Returns true if this element is empty meaning all their attributes have default values and it
* has no descendants.
*
* @return true if the element is empty, false otherwise
*/
private boolean isEmpty() {
Map<String, String> attributesToWrite = attributesToWrite();
if (!attributesToWrite.isEmpty()) {
return false;
}
// if we have children, we are not empty.
return children.isEmpty();
}
