/// <summary>
 /// Initializes a new instance of the <see cref="JsonSerializer"/> class.
 /// </summary>
 public JsonSerializer()
 {
     _referenceLoopHandling = JsonSerializerSettings.DefaultReferenceLoopHandling;
       _missingMemberHandling = JsonSerializerSettings.DefaultMissingMemberHandling;
       _nullValueHandling = JsonSerializerSettings.DefaultNullValueHandling;
       _defaultValueHandling = JsonSerializerSettings.DefaultDefaultValueHandling;
       _objectCreationHandling = JsonSerializerSettings.DefaultObjectCreationHandling;
       _preserveReferencesHandling = JsonSerializerSettings.DefaultPreserveReferencesHandling;
       _typeNameHandling = JsonSerializerSettings.DefaultTypeNameHandling;
       _binder = DefaultSerializationBinder.Instance;
 }

 private bool HasFlag(PreserveReferencesHandling value, PreserveReferencesHandling flag)
 {
   return ((value & flag) == flag);
 }