Added new result containing sorted set data

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/shared/dispatch/SortedSetResult.java

@@ -0,0 +1,26 @@
+package com.sap.sailing.gwt.ui.shared.dispatch;
+
+import java.util.Collection;
+import java.util.Set;
+import java.util.TreeSet;
+
+public class SortedSetResult<T extends DTO> implements DTO, Result {
+    private TreeSet<T> values = new TreeSet<>();
+    
+    @SuppressWarnings("unused")
+    private SortedSetResult() {
+    }
+
+    public SortedSetResult(Collection<T> values) {
+        super();
+        this.values.addAll(values);
+    }
+    
+    public Set<T> getValues() {
+        return values;
+    }
+    
+    public boolean isEmpty() {
+        return values.isEmpty();
+    }
+}