class AbstractController::Base

(ActionController::Metal and ActionController::Base are defined as abstract)
declared on abstract classes are being removed.
a controller would normally be considered action methods, so methods
instance methods on that abstract class. Public instance methods of
abstract superclass of a controller, and gets a list of all public
A list of all internal methods for a controller. This finds the first

def internal_methods
  controller = self
  methods = []
  until controller.abstract?
    methods += controller.public_instance_methods(false)
    controller = controller.superclass
  end
  controller.public_instance_methods(true) - methods
end