public static function instance()
{
if (!self::$instance) {
$featureDetector = FeatureDetector::instance();
if ($featureDetector->isSupported('runtime.hhvm')) {
// @codeCoverageIgnoreStart
self::$instance = new HhvmFunctionSignatureInspector(InvocableInspector::instance(), $featureDetector);
// @codeCoverageIgnoreEnd
} else {
self::$instance = new PhpFunctionSignatureInspector(InvocableInspector::instance(), $featureDetector);
}
}
return self::$instance;
}