old_contents: # -*- coding: utf-8 -*-
  """
  kraken.lib.exceptions
  ~~~~~~~~~~~~~~~~~~~~~
  
  All custom exceptions raised by kraken's modules and packages. Packages should
  always define their exceptions here.
  """
  
  class KrakenRecordException(Exception):
  
      def __init__(self, message=None):
          Exception.__init__(self, message)
  
  
new_contents: # -*- coding: utf-8 -*-
  """
  kraken.lib.exceptions
  ~~~~~~~~~~~~~~~~~~~~~
  
  All custom exceptions raised by kraken's modules and packages. Packages should
  always define their exceptions here.
  """
  
  class KrakenRecordException(Exception):
  
      def __init__(self, message=None):
          Exception.__init__(self, message)
  
  class KrakenInvalidModelException(Exception):
  
      def __init__(self, message=None):
          Exception.__init__(self, message)
  
  
subject: Rename invalid model exception