code: function deferred_modify_action(seneca, actdef) {
      setImmediate(function() {
        _.each(seneca.private$.action_modifiers, function(actmod) {
          actmod.call(seneca, actdef)
        })
      })
    }
docs: NOTE: use setImmediate so that action annotations (such as .validate) can be defined after call to seneca.add (for nicer plugin code order).