protected function _getFlatFieldName()
{
$_sSectionIndex = isset($this->aArguments['section_id'], $this->aArguments['_section_index']) ? "|{$this->aArguments['_section_index']}" : '';
return $this->getAOrB($this->_isSectionSet(), "{$this->aArguments['_section_path']}{$_sSectionIndex}|{$this->aArguments['_field_path']}", "{$this->aArguments['_field_path']}");
}