This block of code run in master node where using 1.9.3, but i think you more interesting where you can find method 'present?' This is method from 'activesupport' gem which used in Astute. In local project best way to see it:
```
bundle install
bundle console
```
It just open irb with all required gems from Gemfile.

But this methods could not be use for mcollective agents (run using ruby 1.8.7 without 'activesupport' )