module AASM

def self.included(base) #:nodoc:

:nodoc:
initialize persistence for the state machine
make sure to load class methods as well
provide a state machine for the including class 
def self.included(base) #:nodoc:
  base.extend AASM::ClassMethods
  # do not overwrite existing state machines, which could have been created by
  # inheritance, see class method inherited
  AASM::StateMachineStore.register(base)
  AASM::Persistence.load_persistence(base)
  super
end