/** Breaks links to all previously linked $example.
  * $example can be either a string of the classname, or an instance of the class itself
  * If $relation is provided, only matched relations will be delinked
  */
 function deLinkAll($example, $relation = NULL)
 {
     if (is_string($example)) {
         $subject = new $example();
     } else {
         $subject = $example;
     }
     $link = new AmortizeLink($this, $subject);
     return $link->breakLink($this->getPrimary(), NULL, $relation);
 }