code: private static void anchorToId(Element heading, Element anchor) {
  		
  		if ("a".equals(anchor.tagName()) && heading.id().isEmpty()) {
  			String aName = anchor.attr("name");
  			if (!aName.isEmpty()) {
  				// set the anchor name as heading ID
  				heading.attr("id", aName);
  				
  				// remove the anchor
  				anchor.remove();
  			}
  		}
  	}
docs: Moves anchor name to heading id, if one does not exist. Removes the anchor.
  
  @param heading
  @param anchor