LoadPluginCommand addToConfig();
Executable<Optional<PluginInfo>> officialFromFreenet(String pluginIdentifier);
Executable<Optional<PluginInfo>> officialFromHttps(String pluginIdentifier);
+ Executable<Optional<PluginInfo>> fromFreenet(String key);
Executable<Optional<PluginInfo>> fromFile(String filename);
Executable<Optional<PluginInfo>> fromUrl(String url);