public function lineDrawDiagonal($horizontalStartPosition, $verticalStartPosition, $horizontalLength, $verticalLength, $verticalEndPosition)
    {
        $command = new Command\Image\LineDrawDiagonalCommand($horizontalStartPosition, $verticalStartPosition, $horizontalLength, $verticalLength, $verticalEndPosition);
        $this->getComposite()->addCommand($command);
        return $this;
    }