add enum support for model property

modules/swagger-codegen/src/main/resources/php/api.mustache

@@ -76,9 +76,7 @@ class {{classname}} {
         // verify the required parameter '{{paramName}}' is set
         if (${{paramName}} === null) {
             throw new \InvalidArgumentException('Missing the required parameter ${{paramName}} when calling {{nickname}}');
->>>>>>> temporary folder setting
-        }
-        {{/required}}{{/allParams}}
+        }{{/required}}{{/allParams}}
   
         // parse inputs
         $resourcePath = "{{path}}";

modules/swagger-codegen/src/main/resources/php/model.mustache

@@ -78,6 +78,10 @@ class {{classname}} implements ArrayAccess {
      * @return $this
      */
     public function {{setter}}(${{name}}) {
+        {{#isEnum}}$allowed_values = array({{#allowableValues}}{{#values}}"{{{this}}}"{{^-last}}, {{/-last}}{{/values}}{{/allowableValues}});
+        if (!in_array(${{{name}}}, $allowed_values)) {
+            throw new \InvalidArgumentException("Invalid value for '{{name}}', must be one of {{#allowableValues}}{{#values}}'{{{this}}}'{{^-last}}, {{/-last}}{{/values}}{{/allowableValues}}");
+        }{{/isEnum}}
         $this->{{name}} = ${{name}};
         return $this;
     }