docs: def register_mbr_plugin(self, fs_id, plugin):
          """Used in plugin's registration routine,
          to associate it's detection method with given filesystem id
  
          Args:
              fs_id: filesystem id that is read from MBR partition entry
              plugin: plugin that supports this filesystem
          """
          self.logger.debug('MBR: {}, FS ID: {}'
                            .format(self.__get_plugin_name(plugin), fs_id))
          self.__mbr_plugins[fs_id].append(plugin)