/**
* @param Properties $properties
*
* @return int[][]|mixed[][]
*/
private function getMap(Properties $properties) : array
{
$map = [];
foreach ($properties->getPrivateProperties() as $property) {
$propertyKey =& $map[$property->getName()];
$propertyKey[$property->getDeclaringClass()->getName()] = true;
}
return $map;
}
