using myNamespace = MyLibrary.MyNamespace;
using myClass = MyLibrary.MyNamespace.MyClass;In this example, the `using` keyword is used to create an alias for the type `MyLibrary.MyNamespace.MyClass`. From this point forward in the code, the alias `myClass` can be used instead of the original type name. Package Library: System.Core The AddAlias option is part of the System.Core library in C#. This library provides a variety of features that are related to the language syntax and runtime, including options for working with collections, LINQ queries, and more.