DidChangeWatchedFilesRegistrationOptions didChangeWatchedFilesRegistrationOptions = new DidChangeWatchedFilesRegistrationOptions(fileWatchers); JavaLanguageServerPlugin.getInstance().unregisterCapability(Preferences.WORKSPACE_WATCHED_FILES_ID, Preferences.WORKSPACE_WATCHED_FILES); JavaLanguageServerPlugin.getInstance().registerCapability(Preferences.WORKSPACE_WATCHED_FILES_ID, Preferences.WORKSPACE_WATCHED_FILES, didChangeWatchedFilesRegistrationOptions);