anchor.diff:      % Marks that the record's effective relations are not up to date.
       bottom_up_dirty = true :: boolean()
   }).
  -
   
   %% This record defines a provider who support spaces and can be reached via url
   -record(od_provider, {
  
positive.code:     bottom_up_dirty = true :: boolean()
  }).
  
  
  -record(od_handle_service, {
      name :: od_handle_service:name() | undefined,
      proxy_endpoint :: od_handle_service:proxy_endpoint() | undefined,
  
negative.code:     bottom_up_dirty = true :: boolean()
  }).
  
  %% This record defines a space that can be used by users to store their files
  -record(od_space, {
      name :: undefined | binary(),
  