[QUESTION] Does LiteDB cope with nested objects of the same type?

[malisimat]

Question

I'm unable to properly recall nested objects in LiteDB. An object that contains a collection of children of the same object (i.e. a tree structure) fails to populate the collection when retrieved from the database.

Code

A simple object (MyObj.cs):

using LiteDB;

public class MyObj
{
    public string Name { get; set; } = "";
    public IEnumerable<MyObj> Children = new List<MyObj>();

    public override string ToString()
    {
        var childStr = string.Join(", ",Children.Select(c => c.ToString()).ToArray());
        return $"[ {Name}: {childStr} ]";
    }
}

A basic console application to instantiate the object and test (Program.cs):

using LiteDB;

var myObj = new MyObj() {
    Name = "root",
    Children = new List<MyObj>() {
        new MyObj() {
            Name = "Level1",
            Children = new List<MyObj>()
        }
    }
};

const string dbFile = "test.db";
const string collection = "MyObjs";

using (var db = new LiteDatabase(dbFile))
{
    var col = db.GetCollection<MyObj>(collection);
    col.Insert(myObj);
}

Console.WriteLine(myObj);

using (var db = new LiteDatabase(dbFile))
{
    var col = db.GetCollection<MyObj>(collection);
    var found = col.FindOne(m => m.Name == "root");
    
    Console.WriteLine(found);
}

Output:

[ root: [ Level1:  ] ]
[ root:  ]

As can be seen, the second line shows that Level1 is not restored correctly. I'm new to LiteDB so assume I am missing something - should this be possible? Do I need to use BsonRef or similar to achieve this?

Tested with LiteDB v5.0.21, .Net v8.0.303

Many thanks for any pointers.