public function rewind()
{
if (!$this->file->isOpen()) {
$this->file->openForRead();
}
$this->file->rewind();
$this->count = 0;
$this->next();
}
/**
* execute request and saves output into file
*
* @param string|null $file
*
* @return IFile
* @throws ClientException
*/
public function save($file = null)
{
$this->file = $file ? new File($file) : new TempFile();
$this->file->openForWrite();
curl_setopt_array($this->curl, [CURLOPT_RETURNTRANSFER => false, CURLOPT_FILE => $this->file->getHandle()]);
$this->exec();
$this->file->close();
return $this->file;
}