public function getAvailableOptions()
{
$options = array('text' => null, 'size' => null, 'extension' => null, 'error_correction_level' => null, 'foreground_color' => null, 'background_color' => null, 'padding' => null, 'label' => null, 'label_font_size' => null, 'label_font_path' => null);
return $options;
}