How to install the .NET package Retyped.rx-lite-testing from NuGet with the Package Manager Console in Visual Studio

By Where is my .Net package

.Net
C#
NuGet
Visual Studio
Retyped.rx-lite-testing

Open the project/solution in Visual Studio, and open the console using the Tools > NuGet Package Manager > Package Manager Console command. Run the install command.

Install-Package Retyped.rx-lite-testing -Version 4.0.6687