code: def register_gpt_plugin(self, fs_guid, plugin):
          
          key = uuid.UUID(fs_guid.lower())
  
          self.logger.debug('GPT: {}, GUID: {}'
                            .format(self.__get_plugin_name(plugin), fs_guid))
          self.__gpt_plugins[key].append(plugin)
docs: Used in plugin's registration routine,
          to associate it's detection method with given filesystem guid
  
          Args:
              fs_guid: filesystem guid that is read from GPT partition entry
              plugin: plugin that supports this filesystem