replaced inner class by lambda

Change-Id: I12b44e92bd4aa15fceea67adafedce005a715950

java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/MarkPassingImpl.java

@@ -42,4 +42,5 @@ public class MarkPassingImpl implements MarkPassing {
     public MarkPassing getOriginal() {
         return this;
     }
+
 }

java/com.sap.sse.datamining/src/com/sap/sse/datamining/impl/components/aggregators/ParallelGroupedDataCountDistinctAggregationProcessor.java

@@ -50,12 +50,7 @@ public class ParallelGroupedDataCountDistinctAggregationProcessor
     @Override
     protected void handleElement(GroupedDataEntry<Object> element) {
         GroupKey key = element.getKey();
-        Util.addToValueSet(countMap, key, element.getDataEntry(), new Util.ValueCollectionConstructor<Object, Set<Object>>() {
-            @Override
-            public Set<Object> createValueCollection() {
-                return ConcurrentHashMap.newKeySet();
-            }
-        });
+        Util.addToValueSet(countMap, key, element.getDataEntry(), ConcurrentHashMap::newKeySet);
     }
     
     @Override