old_contents: ANONYMOUS = 'Anonymous User'
  PUBLIC_NON_REQUESTER = 'Public User - None Requester'
  PUBLIC_REQUESTER = 'Public User - Requester'
  AGENCY_HELPER = 'Agency Helper'
  AGENCY_OFFICER = 'Agency FOIL Officer'
  AGENCY_ADMIN = 'Agency Administrator'
  
  ALL = frozenset((
      ANONYMOUS,
      PUBLIC_NON_REQUESTER,
      PUBLIC_REQUESTER,
      AGENCY_HELPER,
      AGENCY_OFFICER,
      AGENCY_ADMIN
  ))
  
new_contents: ANONYMOUS = 'Anonymous User'
  PUBLIC_NON_REQUESTER = 'Public User - None Requester'
  PUBLIC_REQUESTER = 'Public User - Requester'
  AGENCY_HELPER = 'Agency Helper'
  AGENCY_OFFICER = 'Agency FOIL Officer'
  AGENCY_ADMIN = 'Agency Administrator'
  
subject: remove unused set