Windows install Scanner SDK Visual Studio Project Template

I am trying to install the SDK project template Visual Studio Project Template by following the guide in the sdk-windows_devguide_en Appendix B, although i cant seem to find a way to install it. It does not give me the option to double click and begin install, and i cannot find a way to do it through Visual studios. It is a VSI file. When i go through the content install on Visual Studio, it does not come up anywhere.

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