https://docs.cloud.google.com/appengine/docs/standard/java-gen2/reference/services/bundled/latest/com.google.appengine.api.blobstore.BlobInfo
Class BlobInfo (5.0.0) | App Engine standard environment | Google Cloud Documentation
app enginegoogle cloudclass
https://docs.cloud.google.com/java/docs/reference/google-cloud-storage/latest/com.google.cloud.storage.BlobInfo.ObjectCustomContextPayload
Class BlobInfo.ObjectCustomContextPayload (2.67.0) | Java client libraries | Google Cloud...
java clientclass