code: public void bringToFront(Object parent, String name) {
  		Element parentElement = getGroup(parent);
  		if (parentElement == null) {
  			throw new IllegalArgumentException("bringToFront failed: could not find parent group.");
  		}
  
  		Element element = getElement(parent, name);
  		if (element == null) {
  			throw new IllegalArgumentException("bringToFront failed: could not find element within group.");
  		}
  		if (parentElement.getLastChild() != element) {
  			parentElement.appendChild(element);
  		}
  	}
docs: Within a certain group, bring an element to the front. This will make sure it's visible (within that group).
  
  @param object
  The group wherein to search for the element.
  @param name
  The name of the element to bring to the front.
  @since 1.10.0