By default the given {@link $metrics} are used and their corresponding translations are looked up automatically.
If a metric is not translated, you should add the default metric translation for this metric using
the {@hook Metrics.getDefaultMetricTranslations} event. If you want to overwrite any default metric translation
you should overwrite this method, call this parent method to get all default translations and overwrite any
custom metric translations.
public getMetrics ( ) : array | ||
return | array |