/**
  * Returns a new child form
  * @return Form
  */
 function getChildForm()
 {
     $classname = ReportSummaryForm::translateDetailFunctionById($this->getReportParameters()->getDetailsByKey($this->getDetailId()));
     $child_class = new $classname();
     $next_id = $this->getDetailId() + 1;
     $child_class->setDetailId($next_id);
     $child_class->setParentClass($this);
     return $child_class;
 }