public function appendRow($contents = [], $checkName = null, $checked = false, $checkValue = '')
    {
        // Insert row contents
        $gridRow = $this->appendSimpleRow($contents, '');

        // Insert row checks
        if ($this->checkable) {
            return $this->appendCheckRow($gridRow, $checkName, $checked, $checkValue);
        }

        return $this;
    }