code: public static HashOrderMixingStrategy constant(final long seed) {
      return new HashOrderMixingStrategy() {
        @Override
        public int newKeyMixer(int newContainerBufferSize) {
          return (int) BitMixer.mix64(newContainerBufferSize ^ seed);
        }
  
        @Override
        public HashOrderMixingStrategy clone() {
          return this;
        }
      };
    }
docs: A constant {@link HashOrderMixingStrategy}. This is useful if one needs to have
  deterministic key distribution but wishes to control it manually.
  
  Do not use the same constant for more than one container.
  
  Consider using {@linkplain ObjectScatterSet scatter maps or sets} instead
  of constant hash order mixer.