Message::getFiles

public function getFiles(): FileCollection
{
	if (!$this->files instanceof FileCollection)
	{
		$fileIds = $this->getFileIds();
		if (!empty($fileIds))
		{
			$this->files = FileCollection::initByDiskFilesIds($fileIds, $this->getChatId());
		}
		else
		{
			$this->files = new FileCollection;
		}
	}

	return $this->files;
}