Old: Grants permission to view the description of an Amazon EFS file system specified by file system CreationToken or FileSystemId; or to view the description of all file systems owned by the caller's AWS account in the AWS region of the endpoint that is being called New: Grants permission to view the description of an Amazon EFS file system specified by file system CreationToken or FileSystemId; or to view the description of all file systems owned by the caller's AWSaccount in the AWS region of the endpoint that is being called