How can I get average generation time for website using reporting API?

General questions
1

I want to get average generation time for whole website using reporting API.

http://piwik.org/docs/page-speed/#overall-website-speed

I can get avg generation time for individual pages using Actions.getPageUrls, but I want its summary for all the pages.

2

Got it after some more exploration.

I can get it using: Actions.get