Provide competitor registration and deregistration methods on RaeColumn and HasRegattaLike

java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/mock/MockedTrackedRace.java

@@ -1,6 +1,7 @@
 package com.sap.sailing.domain.test.mock;
 
 import java.io.Serializable;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 import java.util.NavigableSet;
@@ -496,6 +497,18 @@ public class MockedTrackedRace implements DynamicTrackedRace {
                     @Override
                     public void registerCompetitor(Competitor competitor) {   
                     }
+
+                    @Override
+                    public void registerCompetitors(Collection<Competitor> competitor) {
+                    }
+
+                    @Override
+                    public void deregisterCompetitor(Competitor competitor) {
+                    }
+
+                    @Override
+                    public void deregisterCompetitors(Collection<Competitor> competitor) {
+                    }
                 };
             }