code: @Override
      public CircuitGroupUnblockingMessage createCGU() {
          CircuitGroupUnblockingMessage msg = new CircuitGroupUnblockingMessageImpl(_CGU_HOLDER.mandatoryCodes,
                  _CGU_HOLDER.mandatoryVariableCodes, _CGU_HOLDER.optionalCodes, _CGU_HOLDER.mandatoryCodeToIndex,
                  _CGU_HOLDER.mandatoryVariableCodeToIndex, _CGU_HOLDER.optionalCodeToIndex);
  
          return msg;
      }
docs: /*
  (non-Javadoc)
  
  @see org.restcomm.protocols.ss7.isup.ISUPMessageFactory#createCGU()