Different ways to add custom JsonConverters to ElasticSearch Nest (.net client)

Nest_AddContractJsonConverters.cs

var settings = new ConnectionSettings("http://localhost:9200)
  .AddContractJsonConverters(type =>
  {
    //TypeCheck to return StringEnumConverter for Enums and Nullable<T> where T : Enum
    if (type.IsEnum || (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>) && type.GetGenericArguments().First().IsEnum))
      return new Newtonsoft.Json.Converters.StringEnumConverter();
    return null;
  });

Nest_SetJsonSerializerSettingsModifier.cs

var settings = new ConnectionSettings("http://localhost:9200)
  .SetJsonSerializerSettingsModifier(jsonSerializerSettings =>
  {
    if (jsonSerializerSettings.Converters == null)
      jsonSerializerSettings.Converters = new List<JsonConverter>();
    //by default will serialize all enum and nullable<T> where T : Enum to strings
    jsonSerializerSettings.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
  });

code examples for my blogpost @ http://markswanderingthoughts.nl/post/82479251894/configuring-custom-jsonconverters-in-nest-for-elasticsea