It depends on whether there are libraries available and how simple they are to use. The spring security SAML plugin is an absolute nightmare to integrate. A basic configuration requires 600 mostly redundant lines of which you probably copy paste 400 from the example project.

I've had a completely different experience with Grails which is a web framework for Groovy that is based on spring boot. It's plugins are usually just a thin wrapper over the actual spring libraries but they take care of those 600 lines and the end result is that you need to write slightly less than 50 lines of configuration in a YAML file.

Basically it can be hell or heaven depending on your language's ecosystem.