Add small fix to Client.Class.liquid

[unchase]

No description provided.

[unchase]

@RicoSuter ready for review

[jeremyVignelles]

What is this supposed to do, in which case?

[unchase]

@jeremyVignelles when we using System.Text.Json with settings like this:

NSwag Studio generates:

private System.Text.Json.JsonSerializerOptions CreateSerializerSettings()
{
    var settings = new System.Text.Json.JsonSerializerOptions(); var converters = new System.Text.Json.Serialization.JsonConverter[] { new Converter1() };
    foreach(var converter in converters)
        settings.Converters.Add(converter);
    UpdateJsonSerializerSettings(settings);
    return settings;
}

After this fix:

private System.Text.Json.JsonSerializerOptions CreateSerializerSettings()
{
    var settings = new System.Text.Json.JsonSerializerOptions(); 
    var converters = new System.Text.Json.Serialization.JsonConverter[] { new Converter1() };
    foreach(var converter in converters)
        settings.Converters.Add(converter);
    UpdateJsonSerializerSettings(settings);
    return settings;
}

[RicoSuter]

Related: RicoSuter/NJsonSchema#1339

[unchase]

Related: #3351