Set default value for format parameter

Author: gcatanese

templates-v7/typescript/model/ObjectSerializer.mustache

@@ -159,10 +159,10 @@ export class ObjectSerializer {
      *
      * @param data - The value to serialize.
      * @param type - The expected type name as a string.
-     * @param format - Format hint (e.g. "date" or "date-time").
+     * @param format - Format hint (e.g. "date" or "date-time"). Default is an empty string.
      * @returns A JSON-compatible representation of `data`.
      */
-    public static serialize(data: any, type: string, format: string): any {
+    public static serialize(data: any, type: string, format: string = ""): any {
         if (data == undefined) {
             return data;
         } else if (primitives.indexOf(type.toLowerCase()) !== -1) {
@@ -239,10 +239,10 @@ export class ObjectSerializer {
      *
      * @param data - The raw input to deserialize.
      * @param type - The expected type name as a string.
-     * @param format - Format hint (e.g. "date" or "date-time").
+     * @param format - Format hint (e.g. "date" or "date-time"). Default is an empty string.
      * @returns A deserialized instance or value of `data`.
      */
-    public static deserialize(data: any, type: string, format: string): any {
+    public static deserialize(data: any, type: string, format: string = ""): any {
         // polymorphism may change the actual type.
         type = ObjectSerializer.findCorrectType(data, type);
         if (data == undefined) {