anchor.diff:          %% NFS storage.
           type => {discriminator, <<"nfs">>},
           %% The hostname (IP address or FQDN) of NFS server.
  -        hostname => {string, optional},
  +        host => {string, optional},
           %% The NFS protocol version. Allowed values are 3 (default) and 4
           %% (experimental).
           version => {integer, optional},
  
positive.code:         readAhead => {integer, {optional, 0}},
          %% The number of automatic reconnect attempts to the server. Setting
          %% `-1` enables infinite number of reconnects.
          autorReconnect => {integer, {optional, 1}},
          %% Determines how the logical file paths will be mapped on the storage.
          %% 'canonical' paths reflect the logical file names and
          %% directory structure, however each rename operation will require
  
negative.code:         %% imported storages.
          readonly => {boolean, optional},
          %% The hostname (IP address or FQDN) of NFS server.
          host => {string, optional},
          %% The NFS protocol version. Allowed values are 3 (default) and 4
          %% (experimental).
          version => {integer, {optional, 3}},
  