code: @GwtIncompatible("doesn't work")
    public static int fromBytes(byte b1, byte b2, byte b3, byte b4) {
      return b1 << 24 | (b2 & 0xFF) << 16 | (b3 & 0xFF) << 8 | (b4 & 0xFF);
    }
docs: Returns the {@code int} value whose byte representation is the given 4
  bytes, in big-endian order; equivalent to {@code Ints.fromByteArray(new
  byte[] {b1, b2, b3, b4})}.
  
  @since 7.0