[c#] missing partial keyword on generated "Serialize" class

[eximarus]

example:

namespace QuickType
{
    using System;
    using System.Collections.Generic;

    using System.Globalization;
    using Newtonsoft.Json;
    using Newtonsoft.Json.Converters;

    public partial class Something
    {
        [JsonProperty("some_property")]
        public string SomeProperty { get; set; }
    }

    public partial class Something
    {
        public static Something FromJson(string json) => JsonConvert.DeserializeObject<Something>(json, QuickType.Converter.Settings);
    }

    public static class Serialize
    {
        public static string ToJson(this Something self) => JsonConvert.SerializeObject(self, QuickType.Converter.Settings);
    }

    internal static class Converter
    {
        public static readonly JsonSerializerSettings Settings = new JsonSerializerSettings
        {
            MetadataPropertyHandling = MetadataPropertyHandling.Ignore,
            DateParseHandling = DateParseHandling.None,
            Converters = {
                new IsoDateTimeConverter { DateTimeStyles = DateTimeStyles.AssumeUniversal }
            },
        };
    }
}

as you can see the Serialize class doesnt have the partial keyword, resulting in compile errors if i generate multiple json objects within the same namespace