Why multiple implementations not allowed declare as module service in module-info.java?

Question

I have one module that provides two implementations of a interface. I am getting compile error 'Duplicate service entry: org.util.hsm.api.HSMService'. Both of implementations belong to same module.

module-info.java

module org.util.thales.hsm {
    uses org.util.hsm.api.HSMService;
    provides org.util.hsm.api.HSMService with org.util.hsm.thales.ThalesHSMService;
    provides org.util.hsm.api.HSMService with org.util.hsm.safenet.SafeNetHSMService;
}

Answer 1

After a lot of trial and error, i found the solution.

module org.util.thales.hsm {
    uses org.util.hsm.api.HSMService;
    provides org.util.hsm.api.HSMService with org.util.hsm.thales.ThalesHSMService, org.util.hsm.safenet.SafeNetHSMService;
}