throw new AssertionError();
    }

    /**
     * Unsafely sets the weak value reference inside the given {@code entry} to be the given {@code
     * valueReference}
     */
    void setWeakValueReferenceForTesting(
        InternalEntry<K, V, ?> entry,
        WeakValueReference<K, V, ? extends InternalEntry<K, V, ?>> valueReference) {
      throw new AssertionError();
    }

    /**