/**
* Purge all instances returned by makeInstance.
*
* This function is most useful when called from tearDown in a test case
* to drop any instances that have been created by the tests.
*
* Warning: This is a helper method for unit tests. Do not call this directly in production code!
*
* @see makeInstance
* @return void
*/
public static function purgeInstances()
{
self::$singletonInstances = array();
self::$nonSingletonInstances = array();
}
/**
* Flush internal runtime caches
*
* Used in unit tests only.
*
* @return void
* @internal
*/
public static function flushInternalRuntimeCaches()
{
self::$indpEnvCache = [];
self::$idnaStringCache = [];
}
