Migrating from Nest to Elasticsearch V8

Before (using Nest) I had

var settings = new ConnectionSettings(new Uri(elasticSettings.Uri));
settings
    .ThrowExceptions(elasticSettings.ThrowExceptions)
    .PrettyJson(elasticSettings.PrettyJson)
    .DefaultMappingFor<CorrelationContext>(ms => ms.Ignore(p => p.DgpHeader));

Changed ConnectionSettings to ElasticsearchClientSettings but the Ignore-option on DefaultMappingFor isn’t available anymore.
I only find documentation regarding this for v7 but not for v8

Is it moved to somewhere else?
And if not, how can we achieve the same result?