- added setter for totalMinutes

- removed dilemma about overriding setEndTime AND setTotalMinutes etc.

zeitlaeufer/src/main/java/de/szimnau/DrinkingBar.java

@@ -37,8 +37,7 @@ public class DrinkingBar extends AbstractLoadingBar {
 
 
    @Override
-   protected void setEndTime(LocalTime endTime) {
-      super.setEndTime(endTime);
+   protected void extraInitEndTimeTotalMinutes() {
       // correct necessary litres to drink based on the end time.
       // lower the volume in quarter litre steps
       BigDecimal calcTotalLitres = DEFAULT_TOTAL_LITRES;