Prado\Web\UI\ActiveControls\TCallbackClientScript::getSelectionControlType PHP Method

    private function getSelectionControlType($control)
    {
        if (is_string($control)) {
            return 'check';
        }
        if ($control instanceof TCheckBoxList) {
            return 'check';
        }
        if ($control instanceof TCheckBox) {
            return 'check';
        }
        return 'select';
    }