old_contents: # cerbero - a multi-platform build system for Open Source software
  # Copyright (C) 2012 Andoni Morales Alastruey <ylatuya@gmail.com>
  #
  # This library is free software; you can redistribute it and/or
  # modify it under the terms of the GNU Library General Public
  # License as published by the Free Software Foundation; either
  # version 2 of the License, or (at your option) any later version.
  #
  # This library is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  # Library General Public License for more details.
  #
  # You should have received a copy of the GNU Library General Public
  # License along with this library; if not, write to the
  # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  # Boston, MA 02111-1307, USA.
  
  
  class BootstrapperBase (object):
  
      def __init__(self, config):
          self.config = config
  
      def start(self):
          raise NotImplemented("'start' must be implemented by subclasess")
  
new_contents: # cerbero - a multi-platform build system for Open Source software
  # Copyright (C) 2012 Andoni Morales Alastruey <ylatuya@gmail.com>
  #
  # This library is free software; you can redistribute it and/or
  # modify it under the terms of the GNU Library General Public
  # License as published by the Free Software Foundation; either
  # version 2 of the License, or (at your option) any later version.
  #
  # This library is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  # Library General Public License for more details.
  #
  # You should have received a copy of the GNU Library General Public
  # License along with this library; if not, write to the
  # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  # Boston, MA 02111-1307, USA.
  
  
  class BootstrapperBase (object):
  
      def __init__(self, config):
          self.config = config
  
      def start(self):
          raise NotImplemented("'start' must be implemented by subclasses")
  
subject: fix typo