class RulesIntegrityException

class RulesIntegrityException extends RulesException {
  public $msg;
  public $element;
  public $keys = array();
  
  /**
   * Constructs a RulesIntegrityException object.
   *
   * @param string $msg
   *   The exception message, already translated.
   * @param $element
   *   The element of a configuration causing the exception or an array
   *   consisting of the element and keys specifying a parameter or provided
   *   variable causing the exception, e.g.
   *   @code array($element, 'parameter', 'node') @endcode
   */
  public function __construct($msg, $element = NULL) {
    $this->element = is_array($element) ? array_shift($element) : $element;
    $this->keys = is_array($element) ? $element : array();
    parent::__construct($msg);
  }

}