code: function() {
          var target = this.redoStack && this.redoStack.pop();
          if (target) {
              this.line.geometry.addComponent(target, this.getCurrentPointIndex());
              this.drawFeature();
          }
          return !!target;
      }
docs: Method: redo
  Reinsert the most recently removed point resulting from an <undo> call.
  The undo stack is deleted whenever a point is added by other means.
  
  Returns:
  {Boolean} A point was added.