         }
     }
     
+    /**
+    
+    func writeXMLFile() throws {
+        
+        // writeHeader
+        
+        // writeNodes
+        for node in nodeList {
+            write(node: Node, to: FileWrapper)
+        }
+    
+        // writeFooter
+    }
+    
+    func write(node: Node, to fileWrapper: FileWrapper)
+ 
+    */
+    
 }

        return nil
    }
    

    
    public func update(_ aRelationship: Relationship) {
        // TODO
    }
    

    public func readXMLFile() throws {
        
        //var error : NSError?
        

public class XMLFileStore : SOGraphDBStore {

    open let xmlFileURL : URL
    
    //MARK:  -
    
