/**
* Constructs a new `FileInfo` instance.
*
* @param string $file Path to file.
*/
public function __construct($file)
{
if (!is_string($file)) {
throw new InvalidArgumentException('FileInfo expects a string.');
}
// cache loaded media types
if (self::$mediaTypes === null) {
self::$mediaTypes = $this->loadMediaTypes();
}
$this->file = $file;
}
