[Rivet] stopwatch feature for timing tests?

[Raghav Kunnawalkam Elayavalli]

Hi Rivet experts, 

I would like to optimize an analysis of mine for which i need the help of something like the TStopwatch feature. I assume i can use that from root itself, pointing to the rootcxxflags during compilation, but i wanted to know if Rivet has something like that. I cant find a timer class in the documentation. but in know its there since you printout the time elapsed. 

Cheers
Raghav