How to get Navigation Target inside WDJ application

Hello Experts,

I have a requirement like I need to get the navigation target like below inside my WD Java application.

http://<hostname>:<port>/irj/portal?NavigationTarget=pcd:portal_content/other_vendors/.....role//page

I will send this as return URL data to the master head through Portal Eventing. The Javascript method redirects to another site and comes back. After certain operations are done, the portal will redirect to my WD Java application using this URL.

My question is how to get the Navigation target -- my WDJ's pcd path and the role that it resides in? Hardcoding this path works perfectI don't want to hard code this path since my App can be moved under any role.

I use EP version 7.4