diff --git a/src/index.ts b/src/index.ts
index 8d07674..fbb509d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -38,6 +38,7 @@ import { ContentInfo } from "./model/ContentInfo";
 import { ContentRating } from "./model/ContentRating";
 import { Contributor } from "./model/Contributor";
 import { CustomerReviews } from "./model/CustomerReviews";
+import { DeliveryFlag } from "./model/DeliveryFlag";
 import { Languages } from "./model/Languages";
 import { LanguageType } from "./model/LanguageType";
 import { OfferSavings } from "./model/OfferSavings";
diff --git a/src/model/DeliveryFlag.ts b/src/model/DeliveryFlag.ts
index 005acd2..6280c41 100644
--- a/src/model/DeliveryFlag.ts
+++ b/src/model/DeliveryFlag.ts
@@ -21,61 +21,67 @@
  *
  */
 
-(function(root, factory) {
-  if (typeof define === 'function' && define.amd) {
-    // AMD. Register as an anonymous module.
-    define(['ApiClient'], factory);
-  } else if (typeof module === 'object' && module.exports) {
-    // CommonJS-like environments that support module.exports, like Node.
-    module.exports = factory(require('../ApiClient'));
-  } else {
-    // Browser globals (root is window)
-    if (!root.ProductAdvertisingAPIv1) {
-      root.ProductAdvertisingAPIv1 = {};
-    }
-    root.ProductAdvertisingAPIv1.DeliveryFlag = factory(root.ProductAdvertisingAPIv1.ApiClient);
-  }
-}(this, function(ApiClient) {
-  'use strict';
-
-
-  /**
-   * Enum class DeliveryFlag.
-   * @enum {}
-   * @readonly
-   */
-  var exports = {
+/**
+ * Enum class DeliveryFlag.
+ * @enum {}
+ * @readonly
+ */
+export const enum DeliveryFlagValues {
     /**
      * value: "AmazonGlobal"
      * @const
      */
-    "AmazonGlobal": "AmazonGlobal",
+    AmazonGlobal = "AmazonGlobal",
     /**
      * value: "FreeShipping"
      * @const
      */
-    "FreeShipping": "FreeShipping",
+    FreeShipping = "FreeShipping",
     /**
      * value: "FulfilledByAmazon"
      * @const
      */
-    "FulfilledByAmazon": "FulfilledByAmazon",
+    FulfilledByAmazon = "FulfilledByAmazon",
     /**
      * value: "Prime"
      * @const
      */
-    "Prime": "Prime"  };
+    Prime = "Prime",
+}
 
+/**
+ * Enum class DeliveryFlag.
+ * @enum {}
+ * @readonly
+ */
+export class DeliveryFlag extends String {
+  /**
+   * value: "AmazonGlobal"
+   * @const
+   */
+  public static get AmazonGlobal() { return DeliveryFlagValues.AmazonGlobal; }
+  /**
+   * value: "FreeShipping"
+   * @const
+   */
+  public static get FreeShipping() { return DeliveryFlagValues.FreeShipping; }
+  /**
+   * value: "FulfilledByAmazon"
+   * @const
+   */
+  public static get FulfilledByAmazon() { return DeliveryFlagValues.FulfilledByAmazon; }
+  /**
+   * value: "Prime"
+   * @const
+   */
+  public static get Prime() { return DeliveryFlagValues.Prime; }
+  
   /**
    * Returns a <code>DeliveryFlag</code> enum value from a Javascript object name.
    * @param {Object} data The plain JavaScript object containing the name of the enum value.
    * @return {module:model/DeliveryFlag} The enum <code>DeliveryFlag</code> value.
    */
-  exports.constructFromObject = function(object) {
+  public static constructFromObject(object: DeliveryFlag|DeliveryFlagValues|string) {
     return object;
   }
-
-  return exports;
-}));
-
-
+};