more hashCode's

Author: ibbem

src/main/java/org/variantsync/diffdetective/gumtree/VariationDiffAdapter.java

@@ -29,4 +29,9 @@ protected VariationTreeAdapter<L> newInstance(VariationNode<?, L> node) {
     public DiffNode<L> getDiffNode() {
         return Cast.<VariationNode<?, L>, Projection<L>>unchecked(getVariationNode()).getBackingNode();
     }
+
+    @Override
+    public int hashCode() {
+        return getLabel().hashCode();
+    }
 }

src/main/java/org/variantsync/diffdetective/gumtree/VariationTreeAdapter.java

@@ -115,4 +115,9 @@ public void setType(Type type) {
     public Tree deepCopy() {
         throw new UnsupportedOperationException();
     }
+
+    @Override
+    public int hashCode() {
+        return getLabel().hashCode();
+    }
 }