vagrant

https://github.com/mitchellh/vagrant

Ruby

Vagrant is a tool for building and distributing development environments.

Vagrant::Plugin::V2::Config#finalize!

This is called as a last-minute hook that allows the configuration
object to finalize itself before it will be put into use. This is
a useful place to do some defaults in the case the user didn't
configure something or so on.

An example of where this sort of thing is used or has been used:
the "vm" configuration key uses this to make sure that at least
one sub-VM has been defined: the default VM.

The configuration object is expected to mutate itself.

Source | Google | Stack overflow

Edit

git clone [email protected]:mitchellh/vagrant.git

cd vagrant

open lib/vagrant/plugin/v2/config.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Vagrant--Plugin--V2--Config-finalize--for-pr

# Commit to git

git add lib/vagrant/plugin/v2/config.rbgit commit -m "better docs for Vagrant::Plugin::V2::Config#finalize!"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Vagrant--Plugin--V2--Config-finalize--for-pr

hub pull-request

# Celebrate!