c# - Interface<T> with T as return type from extension methods

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/66053511/interfacet-with-t-as-return-type-from-extension-methods

Answer 1

@LasseV.Karlsen answered it in comment. I missed where T : class for methods.

public static T MyExtensionMethod<T>(this IMyInterface<T> item, Guid id)
     where T : class
{
   // code
}