public override void WriteObjectId(ObjectId objectId)
{
if (Disposed) { throw new ObjectDisposedException("BsonBinaryWriter"); }
if (State != BsonWriterState.Value)
{
ThrowInvalidState("WriteObjectId", BsonWriterState.Value);
}
_buffer.WriteByte((byte)BsonType.ObjectId);
WriteNameHelper();
_buffer.WriteObjectId(objectId);
State = GetNextState();
}