Folder::addFile

public function addFile(array $data, array $rights = array(), $generateUniqueName = false)
{
	$this->errorCollection->clear();

	static::checkRequiredInputParams($data, array(
		'NAME'
	));

	if($generateUniqueName)
	{
		$data['NAME'] = static::generateUniqueName($data['NAME'], $this->id);
	}

	if(!static::isUniqueName($data['NAME'], $this->id))
	{
		$this->errorCollection->add(array(new Error(Loc::getMessage('DISK_FOLDER_MODEL_ERROR_NON_UNIQUE_NAME'), self::ERROR_NON_UNIQUE_NAME)));
		return null;
	}

	$data['PARENT_ID'] = $this->id;
	$data['STORAGE_ID'] = $this->storageId;
	$data['PARENT'] = $this;

	/** @var File $fileModel */
	$fileModel = $this->processAdd($data, $this->errorCollection, $generateUniqueName);
	if ($fileModel)
	{
		Driver::getInstance()->getRightsManager()->setAsNewLeaf($fileModel, $rights);
	}

	return $fileModel;
}