code: static public String normalize(byte[] data, int format) {
  
          if (null == data) {
              return null;
          }
          if (0 == data.length) {
              return "";
          }
          // if normalization is off, just return
          if (NORMALIZE_OFF == format) {
              return new String(data);
          }
  
          char[] buf = new char[data.length];
          for (int index = 0; index < data.length; index++) {
              buf[index] = normalize((char) data[index], format);
          }
  
          return new String(buf, 0, buf.length);
      }
docs: Normalize the given byte[] of data into a String based on the input
  format.
  
  @param data
  @param format
  @return String (null String if null input);