Overview:
  This resource applies the standard collection item pattern to individual
  OneFS snapshots.  SID in the resource path is either the snapshot name
  (preferred) or snapshot ID.

Method GET:
  Retrieve snapshot information.


Method PUT:
  Modify snapshot. All input fields are optional, but one or more must be
  supplied.


Method DELETE:
  Delete the snapshot. Deleted snapshots will be placed into a deleting state
  until the system can reclaim the space used by the snapshot.


