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

import _ from 'lodash';
import { errors } from 'appium-base-driver';
import { iosCommands } from 'appium-ios-driver';
import { util } from 'appium-support';
import { retryInterval, retry } from 'asyncbox';
import log from '../logger';


let commands = {}, extensions = {};

// pull in all the element commands and helpers from ios-driver,
// then override anything we want below
Object.assign(extensions, iosCommands.element);

commands.getNativeAttribute = async function getNativeAttribute (attribute, el) {
  if (attribute === 'contentSize') {
    // don't proxy requests for the content size of a scrollable element
    return await this.getContentSize(el);
  }

  el = util.unwrapElement(el);

  // otherwise let WDA handle attribute requests
  let value = await this.proxyCommand(`/element/${el}/attribute/${attribute}`, 'GET');
  // Transform the result for the case when WDA returns an integer representation for a boolean value
  if ([0, 1].includes(value)) {
    value = !!value;
  }
  // The returned value must be of type string according to https://www.w3.org/TR/webdriver/#get-element-attribute