private function makeExcludeUnknownUrls()
{
return $this->makeProperty('exclude_unknown_urls', $default = false, FieldConfig::TYPE_BOOL, function (FieldConfig $field) {
$field->title = Piwik::translate('SitesManager_OnlyMatchedUrlsAllowed');
$field->inlineHelp = Piwik::translate('SitesManager_OnlyMatchedUrlsAllowedHelp') . '<br />' . Piwik::translate('SitesManager_OnlyMatchedUrlsAllowedHelpExamples');
$field->uiControl = FieldConfig::UI_CONTROL_CHECKBOX;
});
}