Invoke spring boot services from external application

I want To invoke spring boot services written in STS through my CUBA application UI. Can I get a sample project where cuba platform UI is used to invoke spring boot services from any other application.

Thank You!

Take a look at this sample project: GitHub - cuba-labs/github-statistics: The project demonstrates how to use external objects provided via REST API in a CUBA Application

It integrates with GitHub API and shows data in the CUBA UI.