/**
* Class constructor.
*
* @param mixed $source A file path for a source image.
*
* @since 2.1
*/
public function __construct($source = null, $preferImagick = true)
{
self::$preferImagick = (bool) $preferImagick;
// create image library instance
self::getLib();
if ($source && is_file($source)) {
$this->loadFile($source);
}
}
