WP_Image_Editor_Imagick::flip PHP Method

    public function flip($horz, $vert)
    {
        try {
            if ($horz) {
                $this->image->flipImage();
            }
            if ($vert) {
                $this->image->flopImage();
            }
        } catch (Exception $e) {
            return new WP_Error('image_flip_error', $e->getMessage());
        }
        return true;
    }