<PackageReference Include="Newtonsoft.Json" Version="13.0.2" />

Newtonsoft.Json.Bson.BsonWriter

public class BsonWriter : JsonWriter
Represents a writer that provides a fast, non-cached, forward-only way of generating BSON data.
namespace Newtonsoft.Json.Bson { public class BsonWriter : JsonWriter { public DateTimeKind DateTimeKindHandling { get; set; } public BsonWriter(Stream stream); public BsonWriter(BinaryWriter writer); public void WriteObjectId(byte[] value); public void WriteRegex(string pattern, string options); } }