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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/tb-usercake/models/config.php on line 51
!7 p { L l = ll(); assertSame("ArrayList", collectionMutex(l), l); // not so trivial // new HashMap map; // assertSame("HashMap", collectionMutex(keySet(map)), map); print("OK"); }