public void DeserializeProperty(
BsonReader bsonReader,
object obj,
BsonPropertyMap propertyMap
)
{
var bsonType = bsonReader.PeekBsonType();
BsonMinKey value;
if (bsonType == BsonType.Null) {
bsonReader.ReadNull(propertyMap.ElementName);
value = null;
} else {
bsonReader.ReadMinKey(propertyMap.ElementName);
value = Bson.MinKey;
}
propertyMap.Setter(obj, value);
}