module ActiveSupport::Dependencies

internal state of the descendants tracker, or reloading routes.
reload. That involves more things, like deleting unloaded classes from the
Rails.application.reloader.reload! is the public interface for application

Private method that reloads constants autoloaded by the main autoloader.

def self.clear
  unload_interlock do
    _autoloaded_tracked_classes.clear
    autoloader.reload
  end
end