public void CloseOutput()
{
MemoryStream ms = new MemoryStream();
BsonWriter writer = new BsonWriter(ms);
Assert.IsTrue(ms.CanRead);
writer.Close();
Assert.IsFalse(ms.CanRead);
ms = new MemoryStream();
writer = new BsonWriter(ms) { CloseOutput = false };
Assert.IsTrue(ms.CanRead);
writer.Close();
Assert.IsTrue(ms.CanRead);
}