No, you canβt. As commentators noted, you can display it as lazy and receive it impatiently, but not vice versa.
those. in LINQ you can get relationships using Fetch / FetchMany / ThenFetch / ThenFetchMany :
session.Query<Parent>() .Where(x => x.Name == "Ruba") .FetchMany(x => x.Children) .ThenFetch(x => x.SomethingMore);
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