## Person constructor قم بتهيئة مثيل جديد لـ[`Person`](../) الصف. ```csharp public Person(string last, string first, string middle) ``` | معامل | يكتب | وصف | | --- | --- | --- | | last | String | ......Editor); Assert.IsNull(contributors...Writer); Contributor editor = contributors.Editor; Assert.AreEqual(2...