vRO Java REST SDK example code

As mentioned in the vRO documentation - Developing a Web Services Client for VMware vRealize Orchestrator - PDF

I am trying to get hold of the vRO Java REST SDK example code

https://orchestrator_host:port/vco-repo/com/vmware/o11n/o11n-rest-client/

https://orchestrator_host:port/vco-repo/com/vmware/o11n/o11n-rest-client-examples/

https://orchestrator_host:port/vco-repo/com/vmware/o11n/o11n-rest-client-services/

https://orchestrator_host:port/vco-repo/com/vmware/o11n/o11n-rest-client-stubs/

On the vRO 7.2.0 appliance, there are .jar files in the o11n-rest-client-examples. unable to locate the source. Am I doing something wrong?

Also checked on the VMware Sample Exchange All Samples - Samples - VMware {code} that has a handful of vRO example codes. However, not much using vRO Java REST SDK.