How to pass result from parent job to its continuation

Since version 1.7.8 it is possible to pass results from parent job to continuation jobs in Hangfire. However there is no documentation or example supplied. While browsing code I realized that I need to use ContinuationsSupport attribute with pushResults: true argument. But i have no idea how Hangfire saves the result and then how do I access the result. I can't catch up with the code inside the attribute's class.