Update templates

Author: ayodejidev

templates/ObjectSerializer.mustache

@@ -25,12 +25,12 @@ class ObjectSerializer
      * Serialize data
      *
      * @param mixed  $data   the data to serialize
-     * @param string $type   the OpenAPIToolsType of the data
-     * @param string $format the format of the OpenAPITools type of the data
+     * @param string|null $type   the OpenAPIToolsType of the data
+     * @param string|null $format the format of the OpenAPITools type of the data
      *
      * @return scalar|object|array|null serialized form of $data
      */
-    public static function sanitizeForSerialization($data, $type = null, $format = null)
+    public static function sanitizeForSerialization($data, ?string $type = null, ?string $format = null)
     {
         if (is_scalar($data) || null === $data) {
             return $data;
@@ -153,12 +153,12 @@ class ObjectSerializer
      *
      * @param mixed    $data          object or primitive to be deserialized
      * @param string   $class         class name is passed as a string
-     * @param string[] $httpHeaders   HTTP headers
-     * @param string   $discriminator discriminator if polymorphism is used
+     * @param string[]|null $httpHeaders   HTTP headers
+     * @param string|null   $discriminator discriminator if polymorphism is used
      *
      * @return object|array|null a single or an array of $class instances
      */
-    public static function deserialize($data, $class, $httpHeaders = null)
+    public static function deserialize($data, string $class, ?array $httpHeaders = null, ?string $discriminator = null)
     {
         if (null === $data) {
             return null;

templates/api_parameters.mustache

@@ -1,2 +1,2 @@
 {{! Path and body are required, followed by optional query string and request options }}
-{{#pathParams}}{{{dataType}}} ${{baseName}}, {{/pathParams}}{{#bodyParams}}{{{dataType}}} ${{#lambda.camelcase}}{{paramName}}{{/lambda.camelcase}}, {{/bodyParams}}array $requestOptions = null
+{{#pathParams}}{{{dataType}}} ${{baseName}}, {{/pathParams}}{{#bodyParams}}{{{dataType}}} ${{#lambda.camelcase}}{{paramName}}{{/lambda.camelcase}}, {{/bodyParams}}?array $requestOptions = null