SDK missing Shadow Renderers

I’m working on a project and would like to use the point light shadow renderer but I can not find the class in the SDK. I saw the different shadow types here but I can’t use any of them except the pssm and basic shadow renderers. Is there a plugin or library I needst to install?

No. You just need to create a basic game project and start using them. You will see a few demonstrations of them in action if you create a JmeTests project and go to source package.