populateFiles example

protected $files;

    /** * Returns an array of all uploaded files that were found. * Each element in the array will be an instance of UploadedFile. * The key of each element will be the client filename. * * @return array|null */
    public function all()
    {
        $this->populateFiles();

        return $this->files;
    }

    /** * Attempts to get a single file from the collection of uploaded files. * * @return UploadedFile|null */
    public function getFile(string $name)
    {