--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.graphio/src/org/graalvm/graphio/ProtocolImpl.java	2017-11-03 23:57:45.884106865 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.graphio/src/org/graalvm/graphio/ProtocolImpl.java	2017-11-03 23:57:45.558092276 -0700
@@ -34,9 +34,18 @@
     private final GraphBlocks<Graph, Block, Node> blocks;
     private final GraphElements<ResolvedJavaMethod, ResolvedJavaField, Signature, NodeSourcePosition> elements;
 
-    ProtocolImpl(GraphStructure<Graph, Node, NodeClass, Port> structure, GraphTypes enums, GraphBlocks<Graph, Block, Node> blocks,
+    ProtocolImpl(int major, int minor, GraphStructure<Graph, Node, NodeClass, Port> structure, GraphTypes enums, GraphBlocks<Graph, Block, Node> blocks,
                     GraphElements<ResolvedJavaMethod, ResolvedJavaField, Signature, NodeSourcePosition> elements, WritableByteChannel channel) throws IOException {
-        super(channel);
+        super(channel, major, minor);
+        this.structure = structure;
+        this.types = enums;
+        this.blocks = blocks;
+        this.elements = elements;
+    }
+
+    ProtocolImpl(GraphProtocol<?, ?, ?, ?, ?, ?, ?, ?, ?> parent, GraphStructure<Graph, Node, NodeClass, Port> structure, GraphTypes enums, GraphBlocks<Graph, Block, Node> blocks,
+                    GraphElements<ResolvedJavaMethod, ResolvedJavaField, Signature, NodeSourcePosition> elements) {
+        super(parent);
         this.structure = structure;
         this.types = enums;
         this.blocks = blocks;
@@ -49,11 +58,21 @@
     }
 
     @Override
+    protected Node findNode(Object obj) {
+        return structure.node(obj);
+    }
+
+    @Override
     protected NodeClass findNodeClass(Object obj) {
         return structure.nodeClass(obj);
     }
 
     @Override
+    protected NodeClass findClassForNode(Node obj) {
+        return structure.classForNode(obj);
+    }
+
+    @Override
     protected String findNameTemplate(NodeClass clazz) {
         return structure.nameTemplate(clazz);
     }