lib/acts_as_relation.rb
require 'active_record/acts_as_relation'
require 'active_record/acts_as_relation/version'
require 'active_record/acts_as_relation/acts_as'
require 'active_record/acts_as_relation/access_methods'
require 'active_record/acts_as_relation/acts_as_modules'
require 'active_record/acts_as_relation/superclass_migration'