extensions/git/src/commands.ts/CommandCenter/_cleanUntrackedChange
class CommandCenter:	private async _cleanUntrackedChange(repository: Repository, resource: Resource): Promise<void> {
		const message = l10n.t('Are you sure you want to DELETE {0}?\nThis is IRREVERSIBLE!\nThis file will be FOREVER LOST if you proceed.', path.basename(resource.resourceUri.fsPath));
		const yes = l10n.t('Delete file');
		const pick = await window.showWarningMessage(message, { modal: true }, yes);

		if (pick !== yes) {
			return;
		}

		await repository.clean([resource.resourceUri]);
	}