@plugin
class SystemPlugin():
    def __init__(self, pluginInterface, config):
        super().__init__(pluginInterface, config)
        self.config = config
        self.interface = pluginInterface
        self.plugins = pluginInterface.other_plugins
        self.hooks = pluginInterface.hooks

        self.interface.register_function(self.echo)
        self.interface.register_function(self.exec)

    @plugin_function()
    def echo(self, string: str):
        pass

    def exec(self):
        pass

    @plugin_hook
    def callback(self):
        pass

    @plugin_attachment("pluginname.hookname")
    def caller(self):
        pass


# interface.register_plugin(SystemPlugin)