code: public static @Nonnull JobLauncher newJobLauncher(Properties sysProps, Properties jobProps) throws Exception {
      return newJobLauncher(sysProps, jobProps, null);
    }
docs: Create a new {@link JobLauncher}.
  
  <p>
  This method will never return a {@code null}.
  </p>
  
  @param sysProps system configuration properties
  @param jobProps job configuration properties
  @return newly created {@link JobLauncher}