How to use ZAPI REST API with Jira OAuth using Jira Rest Java Client Core(JRJC)?

[sarthaksamal18@gmail.com]

In our company jira , oauth configured for one project and after that i can able to authenticate using 

jira-rest-java-client-core of version

2.0.0-m31

, but after successfull authentication , how can i make use of ZAPI REST API Calls?
Can you provide any documets or sample projects or examples on this.