[doc] [S3] Pydio creates a *new* container suffixed by `+segments`

While I provided an existing S3-compatible container to my instance during the initial configuration, I got surprised to see that a brand new container got seemingly automatically created by Pydio.
Its name is derived from the original one by appending +segments.

There is no information about this at https://pydio.com/en/docs/cells/v2/s3-compatible-storage and I find this quite surprising.
What would happen, for example, if the access token provided did not allow for new container creation (which would be safer configuration)?

Reason is the handling of multi-part uploads by Swift S3 middleware: https://docs.openstack.org/swift/latest/middleware.html#bucket-segments