docs: private int initStepTransactionTimeout() {
          logger.entering(sourceClass, "initStepTransactionTimeout");
          Properties p = runtimeStepExecution.getProperties();
          int timeout = DEFAULT_TRAN_TIMEOUT_SECONDS; // default as per spec.
          if (p != null && !p.isEmpty()) {
  
              String propertyTimeOut = p.getProperty("javax.transaction.global.timeout");
              if (logger.isLoggable(Level.FINE)) {
                  logger.log(Level.FINE, "javax.transaction.global.timeout = {0}", propertyTimeOut == null ? "<null>" : propertyTimeOut);
              }
              if (propertyTimeOut != null && !propertyTimeOut.isEmpty()) {
                  timeout = Integer.parseInt(propertyTimeOut, 10);
              }
          }
          logger.exiting(sourceClass, "initStepTransactionTimeout", timeout);
          return timeout;
      }