How to use the appium-ios-driver.iosCommands.file function in appium-ios-driver

import log from '../logger';
import { exec } from 'teen_process';
import { addMedia, getAppContainer } from 'node-simctl';
import B from 'bluebird';
import { services } from 'appium-ios-device';

const CONTAINER_PATH_MARKER = '@';
// https://regex101.com/r/PLdB0G/2
const CONTAINER_PATH_PATTERN = new RegExp(`^${CONTAINER_PATH_MARKER}([^/]+)/(.*)`);
const CONTAINER_TYPE_SEPARATOR = ':';
const IFUSE_CONTAINER_DOCUMENTS = 'documents';
const CONTAINER_DOCUMENTS_PATH = 'Documents';
const IO_TIMEOUT = 30000;
const OBJECT_NOT_FOUND_ERROR_MESSAGE = 'OBJECT_NOT_FOUND';

let commands = iosCommands.file;

function verifyIsSubPath (originalPath, root) {
  const normalizedRoot = path.normalize(root);
  const normalizedPath = path.normalize(path.dirname(originalPath));
  // If originalPath is root, `/`, originalPath should equal to normalizedRoot
  if (normalizedRoot !== originalPath && !normalizedPath.startsWith(normalizedRoot)) {
    log.errorAndThrow(`'${normalizedPath}' is expected to be a subpath of '${normalizedRoot}'`);
  }
}

async function createAfcClient (udid, bundleId, containerType) {
  if (!bundleId) {
    return await services.startAfcService(udid);
  }
  const service = await services.startHouseArrestService(udid);
  if (isDocuments(containerType)) {