Installation Instructions
ExtensionPoints can be added using the NuGet package in the following way:
Create a New Project
Using a project template makes it easy to create a project using ExtensionPoints. For instructions on using project templates, please refer to here.
Using a project template creates a project that includes a sample implementation as shown in the following figure.

Adding to an Existing Project
Adding from Visual Studio
From the Visual Studio Solution Explorer, select the project's [Dependencies] and run [Manage NuGet Packages] from the context menu.

Ensure the package source is set to nuget.org. In the [Reference] tab, search for NextDesign. The NextDesign.Desktop.ExtensionPoints package will appear; install it.

Adding from the Command Line
To add the NextDesign.Desktop.ExtensionPoints package from the command line, execute the following command:
C:\Projects\MyExtension> NuGet Install NextDesign.Desktop.ExtensionPoints