MessageCollection::getFileIds

public function getFileIds(): array
{
	$this->fillParams();

	$ids = [];
	foreach ($this as $message)
	{
		if ($message->getParams()->isSet(Params::FILE_ID))
		{
			$ids[$message->getId()] = $message->getParams()->get(Params::FILE_ID)->getValue();
		}
	}

	return $ids;
}