Optionalcredentials_Location of a json file with credentials allowing access to the bucket.
Optionaliteration_How often to check if a new epoch has started.
Feel free to set to None, defaults are sensible.
OptionallocationSpecifies where to write the obtained state parts.
Optionalrestart_Use in case a node that dumps state to the external storage gets in trouble.
Configures how to dump state to external storage.