code: public static String buildCommand(YarnContainerType containerType, Map<String, String> args) {
      CommandBuilder commandBuilder =
          new CommandBuilder("./" + ALLUXIO_SETUP_SCRIPT).addArg(containerType.getName());
      for (Entry<String, String> argsEntry : args.entrySet()) {
        commandBuilder.addArg(argsEntry.getKey(), argsEntry.getValue());
      }
      // Redirect stdout and stderr to yarn log files
      commandBuilder.addArg("1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stdout");
      commandBuilder.addArg("2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stderr");
      return commandBuilder.toString();
    }
docs: Creates a command string for running the Alluxio yarn setup script for the given type of yarn
  container.
  
  @param containerType the type of container to build the command for
  @param args arguments to pass to to the setup script
  @return the built command string