/**
* Returns an array with the names of all variables of this object that should NOT be serialized
* because their value is the default one or useless to be cached for the next page loads.
* Reimplement in derived classes to add new variables, but remember to also to call the parent
* implementation first.
*/
protected function _getZappableSleepProps(&$exprops)
{
parent::_getZappableSleepProps($exprops);
if ($this->_horizontalAlign === null) {
$exprops[] = "TTableItemStyle_horizontalAlign";
}
if ($this->_verticalAlign === null) {
$exprops[] = "TTableItemStyle_verticalAlign";
}
if ($this->_wrap === null) {
$exprops[] = "TTableItemStyle_wrap";
}
}