Represents a bookmark that can be used to return a reader to the current position and state.
Наследование: BsonReaderBookmark
 public override void ReturnToBookmark(
     BsonBinaryReaderBookmark bookmark
 ) {
     context = bookmark.Context;
     state = bookmark.State;
     currentBsonType = bookmark.CurrentBsonType;
     buffer.Position = bookmark.Position;
 }