code: protected Element getElement(Object parent, String name) {
  		if (name == null) {
  			return null;
  		}
  		String id;
  		if (parent == null) {
  			id = getRootElement().getId();
  		} else {
  			id = groupToId.get(parent);
  		}
  		return Dom.getElementById(Dom.assembleId(id, name));
  	}
docs: Returns the element that is a child of the specified parent and has the specified local group name.
  
  @param parent
  the parent group
  @param name
  the local group name
  @return the element or null if it does not exist or the name was null