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

def register_gpt_plugin(self, fs_guid, plugin):
        """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
        """
        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)