     let idKey = "id"
     let relStartKey = "from"
     let relEndKey = "to"
+    
+    let attrStringKey = "string"
+    let attrIntKey = "int"
 
     // TODO
     //let osLog = OSLog(subsystem: "net.zehrer.graphdb.plist", category: "testing")

        case propertyKey:
            addProperty(attributes: attributeDict)
            break
        default:
            return
        }

        }
    
    }
    
    // MARK: - XMLParserDelegate
    
