code: @Override
      public OperationResult operate(TestStep testStep) {
          String value = testStep.getValue();
  
          LogRecord record = LogRecord.info(log, testStep, "test.step.execute", value);
  
          TestScript testScript = current.getTestScript();
          int nextIndex = testScript.getIndexByScriptNo(value) - 1;
          current.setCurrentIndex(nextIndex);
  
          return new OperationResult(record);
      }
docs: protected OperationLog opelog;