量角器使用td <> tagName搜索和编辑行

Question

我正在尝试使用element（by.repeater（））搜索和编辑行；

<tr ng-class="{'rowSelect': $index == tableIndex}"
    ng-click="updateDetails($index)"
    ng-repeat="row in displayRows track by $index" class="ng-scope"
    role="button" tabindex="0">  


    <!-- ngRepeat: item in row -->
    <td ng-repeat="item in row" class="ng-binding ng-scope">DebsProperty</td>
    <!-- end ngRepeat: item in row -->

    <!-- ngIf: canEdit -->
    <span ng-if="canEdit" class="ng-scope">
    <a ng-click="editRow(row, $index)">Edit</a></span>
    <!-- end ngIf: canEdit -->

</tr>

canEdit的xpath是

//*[@id="stage"]/table/tbody/tr[223]/td[6]/span[1]/a

我如何编写量角器代码以选择canEdit以使用转发器单击。