/** {@inheritDoc} */
  public String toString() {
    String s = "";

    for (UnsignedByte b : this.bytes) {
      s += " ";
      s += getName(b.toInteger());
    }

    return s.replaceFirst(" ", "");
  }
 /**
  * number of bits used to represent this type.
  *
  * @return Integer
  */
 public static int length() {
   return UnsignedByte.length();
 }