code: function tabView_openTab(aSpec) {
      var spec = aSpec || {};
      var group = spec.group;
  
      if (!group) {
        throw new Error(arguments.callee.name + ": Group not specified.");
      }
  
      var button = this.getElement({
        type: "group_newTabButton",
        value: group
      });
  
      this._controller.click(button);
      this.waitForClosed();
    }
docs: Open a new tab in the specified group
  
  @param {object} aSpec
  Information about the element to operate on
  Elements: group - Group to create a new tab in