code: public static ApproximateHistogram fromBytes(byte[] bytes)
    {
      ByteBuffer buf = ByteBuffer.wrap(bytes);
      return fromBytes(buf);
    }
docs: Constructs an Approximate Histogram object from the given byte-array representation
  
  @param bytes byte array to construct an ApproximateHistogram from
  
  @return ApproximateHistogram constructed from the given byte array