code: public TomcatBoot logging(String loggingFile, Consumer<TomcatLoggingOption> opLambda) {
          if (loggingFile == null || loggingFile.trim().length() == 0) {
              throw new IllegalArgumentException("The argument 'loggingFile' should not be null or empty: " + loggingFile);
          }
          if (opLambda == null) {
              throw new IllegalArgumentException("The argument 'opLambda' should not be null.");
          }
          this.loggingFile = loggingFile;
          this.loggingOptionCall = opLambda;
          return this;
      }
docs: You can set tomcat logging by application properties.
  <pre>
  boot.logging("tomcat_logging.properties", op -&gt; {
  op.replace("tomcat.log.name", "catalina_out");
  }); // uses jdk14logger
  </pre>
  @param loggingFile The path of logging file in classpath. (NotNull)
  @param opLambda The callback for logging option. (NotNull)
  @return this. (NotNull)