/**
* Returns the index of a "property group" (the first object in the flat array that features
* the specified property). Returns false if property id could not be found.
*
* @param PropertyId $propertyId
*
* @return bool|int
*/
private function getPropertyGroupIndex(PropertyId $propertyId)
{
$i = 0;
foreach ($this->byId as $serializedPropertyId => $objects) {
$pId = new PropertyId($serializedPropertyId);
if ($pId->equals($propertyId)) {
return $i;
}
$i += count($objects);
}
return false;
}