public function toJson($pretty, $tabs = false)
{
$json = JsonUtils::dataToJson($this->data, $pretty);
if ($tabs && $pretty) {
$json = preg_replace_callback('/^( +)/m', function ($m) {
return str_repeat("\t", (int) strlen($m[1]) / 4);
}, $json);
}
return $json;
}
