NAME
Google::RestApi::Auth - Base class for authorization for Google Rest APIs
DESCRIPTION
Small base class that establishes the contract between RestApi and the various possible authorization methods. If the auth class expects to be able to add a param to each URL (outdated), it will be called via 'params' when the time comes to add them to the calling URL. If the auth class expects to add an authorization header, it will be called via 'headers' to return the proper headers for that auth class.
The default behaviour is to return nothing for each, so the derived class has to return at least something for one of them to be functional.