code: function addonsManager_getAddonRadiogroup(aSpec) {
      var spec = aSpec || { };
      var addon = spec.addon;
      var radiogroup = spec.radiogroup;
  
      if (!radiogroup)
        throw new Error(arguments.callee.name + ": Radiogroup not specified.");
  
      return this.getAddonChildElement({addon: addon, type: radiogroup + "Radiogroup"});
    }
docs: Returns the element of the specified add-ons radio group
  
  @param {object} aSpec
  Information on which add-on to operate on
  Elements: addon      - Add-on element
  radiogroup - Radiogroup
  Detail View (autoUpdate)
  
  @returns Add-on radiogroup
  @type {ElemBase}