/// <summary>
/// Serializes an object to a BsonWriter.
/// </summary>
/// <param name="bsonWriter">The BsonWriter.</param>
/// <param name="nominalType">The nominal type.</param>
/// <param name="value">The object.</param>
/// <param name="options">The serialization options.</param>
public override void Serialize(
BsonWriter bsonWriter,
Type nominalType,
object value,
IBsonSerializationOptions options
) {
if (value == null) {
bsonWriter.WriteNull();
} else {
var timestamp = (BsonTimestamp) value;
bsonWriter.WriteTimestamp(timestamp.Value);
}
}