code: public static File getConfFile(Props props, String workingDir, String fileName) {
      File jobDir = new File(workingDir, getDirName(props));
      if (!jobDir.exists()) {
        jobDir.mkdir();
      }
      return new File(jobDir, fileName);
    }
docs: Resolve the location of the file containing the configuration file.
  
  @param props The Azkaban properties
  @param workingDir The Azkaban job working directory
  @param fileName The desired configuration file name