code: function(vertex) {
          this.resetVertices();
          this.setFeatureState();
          this.onModification(this.feature);
          this.layer.events.triggerEvent("featuremodified", 
                                         {feature: this.feature});
      }
docs: Method: dragComplete
  Called by the drag handler when the feature dragging is complete.
  
  Parameters:
  vertex - {<OpenLayers.Feature.Vector>} The vertex being dragged.