Piwik\Plugins\Contents\Contents::addMetricDocumentationTranslations PHP Method

    public function addMetricDocumentationTranslations(&$translations)
    {
        $translations['nb_impressions'] = Piwik::translate('Contents_ImpressionsMetricDocumentation');
        $translations['nb_interactions'] = Piwik::translate('Contents_InteractionsMetricDocumentation');
    }