What is the replacement for `rt.jar` for projects beyond Java 9?

[magnus-madsen]

It seems that rt.jar has been removed from Java 9 and onwards.

In some of the examples it is used as follows:

inputLocations.add(
        new JavaClassPathAnalysisInputLocation(
                System.getProperty("java.home") + "/lib/rt.jar")); // add rt.jar

What's the replacement? What should one do for e.g. Java version 23?