How to use the recast.types.builtInTypes function in recast

/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var m = require("private").makeAccessor();
var types = require("recast").types;
var isArray = types.builtInTypes.array;
var n = types.namedTypes;
var hasOwn = Object.prototype.hasOwnProperty;

function makePredicate(propertyName, knownTypes) {
  function onlyChildren(node) {
    n.Node.assert(node);

    // Assume no side effects until we find out otherwise.
    var result = false;

    function check(child) {
      if (result) {
        // Do nothing.
      } else if (isArray.check(child)) {
        child.some(check);
      } else if (n.Node.check(child)) {

/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var types = require("recast").types;
var isArray = types.builtInTypes.array;
var b = types.builders;
var n = types.namedTypes;
var leap = require("./leap");
var meta = require("./meta");
var util = require("./util");
var runtimeProperty = util.runtimeProperty;
var hasOwn = Object.prototype.hasOwnProperty;

function Emitter(contextId) {
  assert.ok(this instanceof Emitter);
  n.Identifier.assert(contextId);

  // Used to generate unique temporary names.
  this.nextTempId = 0;

  Object.defineProperties(this, {

/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var types = require("recast").types;
var isArray = types.builtInTypes.array;
var b = types.builders;
var n = types.namedTypes;
var leap = require("./leap");
var meta = require("./meta");
var util = require("./util");
var runtimeProperty = util.runtimeProperty;
var hasOwn = Object.prototype.hasOwnProperty;

function Emitter(contextId) {
  assert.ok(this instanceof Emitter);
  n.Identifier.assert(contextId);

  // Used to generate unique temporary names.
  this.nextTempId = 0;

  Object.defineProperties(this, {