code: function IpMessaging(twilio) {
    Domain.prototype.constructor.call(this, twilio, 'https://ip-messaging.twilio.com');
  
    // Versions
    this._v1 = undefined;
    this._v2 = undefined;
  }
docs: /* jshint ignore:start 
  Initialize ip_messaging domain
  
  @constructor Twilio.IpMessaging
  
  @property {Twilio.IpMessaging.V1} v1 - v1 version
  @property {Twilio.IpMessaging.V2} v2 - v2 version
  @property {Twilio.IpMessaging.V2.CredentialList} credentials -
  credentials resource
  @property {Twilio.IpMessaging.V2.ServiceList} services - services resource
  
  @param {Twilio} twilio - The twilio client
   /* jshint ignore:end