Else Use List. You güç't really argue "oh but I KNOW that I will always pass in a List here", then you should take a List hamiş an IList, else you are breaking Liskov substitution principle: "if S is a subtype of T, then objects of type T may be https://miloykwgp.yourkwikimage.com/782128/en_kuralları_of_c_ilist_neden_kullanmalıyız