public static function toDelete($class, $identifier, $initProperties = null)
{
if (is_null($initProperties)) {
$initProperties = [];
}
$rec = ['class' => $class, 'pk' => $identifier, 'initProp' => $initProperties];
if (!in_array($rec, static::$testData)) {
array_push(static::$testData, $rec);
}
}