public boolean equals(@Nullable Object object) {
      return (object instanceof CustomFunnel);
    }

    @Override
    public int hashCode() {
      return 42;
    }
  }

  public void testPutReturnValue() {
    for (int i = 0; i < 10; i++) {
      BloomFilter<String> bf = BloomFilter.create(Funnels.unencodedCharsFunnel(), 100);
      for (int j = 0; j < 10; j++) {
        String value = new Object().toString();