Re-added this functionality since I will remove it in another PR

com.unity.shadergraph/Editor/Data/Graphs/AbstractMaterialGraph.cs

             set { m_PreviewData = value; }
         }
 
+        public string name { get; set; }
+        
         [SerializeField]
         string m_Path;
 

com.unity.shadergraph/Editor/Drawing/Views/MaterialNodeView.cs

 
         public void ShowGeneratedCode()
         {
-            
-//            var graph = (AbstractMaterialGraph)node.owner;
-//
-//            string path = String.Format("Temp/GeneratedFromGraph-{0}-{1}-{2}.shader", SanitizeName(graph.name), SanitizeName(node.name), node.guid);
-//
-//            if (GraphUtil.WriteToFile(path, ConvertToShader()))
-//                GraphUtil.OpenFile(path);
+            var graph = (AbstractMaterialGraph)node.owner;
+
+            string path = String.Format("Temp/GeneratedFromGraph-{0}-{1}-{2}.shader", SanitizeName(graph.name), SanitizeName(node.name), node.guid);
+
+            if (GraphUtil.WriteToFile(path, ConvertToShader()))
+                GraphUtil.OpenFile(path);
         }
 
         string ConvertToShader()