file_system_id - (Optional) The ID that identifies the file system (e.g. fs-ccfc0d65).
creation_token - (Optional) Restricts the list to the file system with this creation token.
arn - Amazon Resource Name of the file system.
performance_mode - The PerformanceMode of the file system.
tags - The list of tags assigned to the file system.
encrypted - Whether EFS is encrypted.
dns_name - The DNS name for the filesystem per documented convention.