text from other data.
 *  Fix: Recover from `REFUSED_STREAM` errors in HTTP/2. This should improve
    interoperability with Nginx 1.10.0, which [refuses][nginx_959] streams
    created before HTTP/2 settings have been acknowledged.
 *  Fix: Improve recovery from failed routes.
 *  Fix: Accommodate tunneling proxies that close the connection after an auth
    challenge.

    public int hashCode() {
      // Warning: this is broken if size() == 0, so it is critical that we
      // substitute an empty ImmutableSet to the user in place of this

      // It's a weird formula, but tests prove it works.
      int adjust = size() - 1;
      for (int i = 0; i < axes.size(); i++) {
        adjust *= 31;
        adjust = ~~adjust;
        // in GWT, we have to deal with integer overflow carefully
      }

    }
  }

  /*
   * Preconditions.checkNotNull is *intended* for performing eager null checks on parameters that a
   * nullness checker can already "prove" are non-null. That means that the first parameter to
   * checkNotNull *should* be annotated to require it to be non-null.
   *
   * However, for a variety of reasons, Google developers have written a ton of code over the past

* Fix kubectl create secret/configmap to allow = values ([#24989](https://github.com/kubernetes/kubernetes/pull/24989), [@derekwaynecarr](https://github.com/derekwaynecarr))
* Upgrade installed packages when building hyperkube to improve the security profile ([#25114](https://github.com/kubernetes/kubernetes/pull/25114), [@aaronlevy](https://github.com/aaronlevy))