Piwik\Columns\Updater::getConversionDimensions PHP Method

    private function getConversionDimensions()
    {
        // see eg https://github.com/piwik/piwik/issues/8399 we fetch them only on demand to improve performance
        if (!isset($this->conversionDimensions)) {
            $this->conversionDimensions = ConversionDimension::getAllDimensions();
        }
        return $this->conversionDimensions;
    }