code: function() {
      _o('./Acl').prototype._init.call(this)
  
      // add a group definition called __owner__ which is a function that
      // checks to see if user._id is the same as the object owner
      var self = this
      self.groupDefinitions = self.groupDefinitions || {}
      self.groupDefinitions[self.OWNER_SPEC] = function(user) {
        return self.isOwner(user, self.object)
      }
    }
docs: ***************************************************************************
  @method _init
  @description _init description
  @returns {xxx} -- xxx