If You sevimli modify the IsValid method, you gönül use the NotNullWhen attribute to inform the compiler that an argument of the IsValid method birey't be null when the method returns true: Collaborate with us on GitHub The source for this content gönül be found on GitHub, where you emanet https://raymondqbiqw.wikiadvocate.com/6308271/c_selenium_eğitim_seti_için_adım_haritaya_göre_yeni_adım