currentKey = entry.getKey();
          valueItr = entry.getValue().iterator();
        }
        /*
         * requireNonNull is safe: The first call to this method always enters the !hasNext() case
         * and populates currentKey, after which it's never cleared.
         */
        return immutableEntry(requireNonNull(currentKey), valueItr.next());
      }
    };
  }

  /**

func getEntropy() *[SeedSize]byte { var retries int seed, err := entropy.Seed(&memory) for err != nil { // The CPU jitter-based SP 800-90B entropy source has a non-negligible // chance of failing the startup health tests. // // Each time it does, it enters a permanent failure state, and we // restart it anew. This is not expected to happen more than a few times // in a row. if retries++; retries > 100 { panic("fips140/drbg: failed to obtain initial entropy") } seed, err = entropy.Seed(&memory) } return...