function mxVsdxCodec(editorUi) {
                    this.RESPONSE_END = "</mxfile>";
                    this.RESPONSE_DIAGRAM_START = "";
                    this.RESPONSE_DIAGRAM_END = "</diagram>";
                    this.RESPONSE_HEADER = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><mxfile>";
                    
                    /**
                     * Stores the vertexes imported.
                     */
                    this.vertexMap = ({});
                    /**
                     * Stores the shapes that represent Edges.
                     */
                    this.edgeShapeMap = ({});
                    /**
                     * Stores the shapes that represent Vertexes.
                     */
                    this.vertexShapeMap = ({});
                    /**
                     * Stores the parents of the shapes imported.
                     */
                    this.parentsMap = ({});
                    
                    this.layersMap = ({});
                    /**
                     * Set to true if you want to display spline debug data
                     */
                    this.debugPaths = false;
                    this.vsdxModel = null;
                    this.editorUi = editorUi;
                }
Parses a .vsdx XML diagram file and imports it in the given graph.<br/>
@class