https://bugzilla.mozilla.org/show_bug.cgi?id=1527431
1527431 - Intermittent tests/jit-test/jit-test/tests/proxy/getPrototype-cycle-hasInstance.js |...
RESOLVED (nobody) in Core - JavaScript Engine: JIT. Last updated 2019-03-13.
intermittenttestsjitproxycycle
https://www.php.net/manual/uk/reflectionmethod.getprototype.php
PHP: ReflectionMethod::getPrototype - Manual
Gets the method prototype (if there is one)
phpmanual