docs: public ModbusRequest buildDiagnostics(DiagnosticsSubFunctionCode subFunctionCode, int serverAddress, int data) throws ModbusNumberException {
          DiagnosticsRequest request = new DiagnosticsRequest();
          request.setServerAddress(serverAddress);
          request.setSubFunctionCode(subFunctionCode);
          request.setSubFunctionData(data);
          return request;
      }