Add jars from custom SDK for new custom project (Plugin development)

Hello,

I'm developing plugin which is designed to create a custom project. In new Project Wizard firstly I choose JDK (for example 1.8) and on the second step i want to choose directory with several Jar files and when i click on the finish button on the last step i want to be able to use this jars in this new project.

How can I manage to do that? I created the CustomSdkType extends SdkType, i have ModuleBuilder class , ModuleWizardStep. What else do I have to do to make these jars usable in the new project? 

Thank you in advance.