Documentation of what it is

What is Double Linked List - that seems to be obvious. But what is SkipList? Every public class should have a class summary. What is the purpose of the data structure? When should it be used? Is there an alternative in the standard? When not to use it? Limitations? Performance? Simple use example?
This would add great value.
Using AI, generating this should, not be too much work.

If you take a look at the other comments: this is private method.., CONSTRUCTOR - that is completely redundant and actually hindering. We know it is private. The keyword says so.
In the code there is a complete lack of of any reasonable comments.