protected function _getZappableSleepProps(&$exprops)
{
parent::_getZappableSleepProps($exprops);
if ($this->_attributes === null) {
$exprops[] = "TListItem_attributes";
}
if ($this->_text === '') {
$exprops[] = "TListItem_text";
}
if ($this->_value === '') {
$exprops[] = "TListItem_value";
}
if ($this->_enabled === true) {
$exprops[] = "TListItem_enabled";
}
if ($this->_selected === false) {
$exprops[] = "TListItem_selected";
}
}