code: public String toPayloadString()
      {
          String digits = "0123456789ABCDEF";
          StringBuilder retval = new StringBuilder("DataSlice@");
  
          retval.append(hashCode());
          retval.append("[");
  
          for (int i=_offset; i<(_offset+_length); i++)
          {
              retval.append(digits.charAt((_bytes[i] >> 4) & 0xf));
              retval.append(digits.charAt(_bytes[i] & 0xf));
          }
  
          retval.append("]");
  
          return retval.toString();
      }
docs: This method will output the contents of the slice designated
  by the provided offset and length.
  
  @return