谷歌云存储java -如何在上传编程时访问文件。

I am using Google Cloud Storage to store images. I noticed that you can upload multiple files but I couldn't see anything about giving permissions to all files in one go. I give full access to the bucket but again all files inside it do not obtain the same permissions and I have to give one by one. I have also implemented a handler to upload files programmatically. Any ideas how to give full access to my images while uploading? Please see code below, I am using Spring MVC controllers:I am using Google Cloud Storage to store images