           updators: updators  ## last one
 
   recomputeRoots: ->
+    #check Meteor.userId(), String  ## should be done by 'canSuper'
     unless canSuper wildGroup
       throw new Meteor.Error 'recomputeRoots.unauthorized',
         "Insufficient permissions to recompute roots in group '#{wildGroup}'"

    id

  messageSuperdelete: (message) ->
    check message, String
    unless canSuperdelete message
      throw new Meteor.Error 'messageSuperdelete.unauthorized',

    ## Meteor.user().username just committed this version.

  messageImport: (group, parent, message, diffs) ->
    #check Meteor.userId(), String  ## should be done by 'canImport'
    check group, String
    check parent, String if parent?
    check message,
