testInsertRowAtBeginningRowspan() {
    // Test inserting a row when the existing DOM row at that index has
    // a cell with a rowspan. This should be just like a regular insert -
    // the rowspan shouldn't have any effect.
    assertEquals(
        'Cell has starting rowspan', 2,
        dom.getFirstElementChild(
               dom.getElementsByTagName(TagName.TR, testElements.torture)[0])
            .rowSpan);
    /**
     * @suppress {missingProperties} suppression added to enable type
     * checking
     */
    const tr = testObjects.torture.insertRow(0);
    // Among other things this verifies that the new row has 3 child TDs.
    _testInsertRowResult(testElements.torture, testObjects.torture, tr, 0);
  }
@suppress {missingProperties,strictMissingProperties} suppression
     added to enable type checking