}

  public void testConcurrencyLevel_large() {
    CacheBuilder.newBuilder().concurrencyLevel(Integer.MAX_VALUE);
    // don't actually build this beast
  }

  public void testMaximumSize_negative() {
    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    assertThrows(IllegalArgumentException.class, () -> builder.maximumSize(-1));
  }

  public void testMaximumSize_setTwice() {