Before we look at third-party action plugins, we will quickly examine the structure of a built-in plugin; in fact, one we have already implemented previously, add_git_tag (https://github.com/fastlane/fastlane/blob/master/fastlane/lib/fastlane/actions/add_git_tag.rb). While we used it in the previous chapter, it helps to understand the inner workings of the plugin, as well as the available mandatory and optional parameters/arguments.
You can view documentation for a specific built-in plugin/action by calling fastlane action action_name; for instance:
$ fastlane action add_git_tag
This would return to Command Prompt:
Loading documentation for add_git_tag: +-----------------------------------------------------------------------------------------------------------------+ ...
