anchor.diff:      luma_idp_user_scheme_model/0,
       luma_onedata_group_scheme_model/0,
       luma_onedata_user_scheme_model/0,
  +    nfs_model/0,
  +    nfs_credentials_model/0,
  +    nfs_modify_model/0,
       nulldevice_model/0,
       nulldevice_credentials_model/0,
       nulldevice_modify_model/0,
  
positive.code:         mappingScheme => {discriminator, <<"onedataUser">>},
          %% The id of user in Onedata system.
          onedataUserId => string
      }.
  
  %%--------------------------------------------------------------------
  
negative.code: %%--------------------------------------------------------------------
  -spec storage_modify_details_model() -> onepanel_parser:multi_spec().
  storage_modify_details_model() ->
      {subclasses, onepanel_parser:prepare_subclasses([posix_modify_model(), s3_modify_model(), ceph_modify_model(), cephrados_modify_model(), embeddedceph_modify_model(), swift_modify_model(), glusterfs_modify_model(), nulldevice_modify_model(), webdav_modify_model(), xrootd_modify_model(), nfs_modify_model(), http_modify_model()])}.
  
  %%--------------------------------------------------------------------
  %% @doc The storage parameters to be changed. Should be a single-valued
  