Set default value for list of objects in properties

Question

Is it possible to set a default value for list of objects in properties?

public class GameLevel
{
    public int nextLevelToUnlock { get; set; } = 1;
    public List<LevelDetails> levelDetails { get; set; }
}

public class LevelDetails
{
    public int levelIndex { get; set; }
    public int Stars { get; set; }
}