code: function parse(string) {
  
      var buffer = newBufferFromSize(16);
      var j = 0;
      for (var i = 0; i < 16; i++) {
          buffer[i] = hex2byte[string[j++] + string[j++]];
          if (i === 3 || i === 5 || i === 7 || i === 9) {
              j += 1;
          }
      }
  
      return buffer;
  }
docs: read stringified uuid into a Buffer