How to use a self signed root ca when using rest client?

[kinamoe]

I'm using quarkus in a internal system. For some reason, our system has components that use HTTPS certificates signed by a self-signed root certificate. I want to make Quarkus Rest Client trust this self-signed root certificate instead of completely turning off HTTPS certificate verification. How should I achieve this?

[quarkus-bot[bot]]

/cc @michalszynkiewicz