Content::getChunkSizeAction

public function getChunkSizeAction($filename, $size)
{
	$size = (int)$size;
	if ($size < 0)
	{
		throw new ArgumentException('Error in size');
	}

	$tmpFileManager = new Bitrix24DiskUploadFileManager();

	return [
		'size' => $tmpFileManager->getChunkSize($filename, $size)
	];
}