#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2009 Doug Hellmann All rights reserved.
     #
     """
     """
     #end_pymotw_header
     
     import abc
     
     class PluginBase(object):
         __metaclass__ = abc.ABCMeta
         
         @abc.abstractmethod
         def load(self, input):
             """Retrieve data from the input source and return an object."""
             return
         
         @abc.abstractmethod
         def save(self, output, data):
             """Save the data object to the output."""
             return