code: protected function findForm($method, $attribute)
      {
          if (is_integer($this->focus)) {
              return $this->findFormInFrame(
                      $this->frames[$this->focus],
                      $this->focus,
                      $method,
                      $attribute);
          }
          for ($i = 0; $i < count($this->frames); $i++) {
              $form = $this->findFormInFrame(
                      $this->frames[$i],
                      $i,
                      $method,
                      $attribute);
              if ($form) {
                  return $form;
              }
          }
  
          return;
      }
docs: General form finder. Will search all the frames or just the one in focus.
  
  @param string $method    Method to use to find in a page.
  @param string $attribute Label, name or ID.
  
  @return SimpleForm    Form object containing the matching ID.