src/vs/workbench/contrib/debug/common/debugLifecycle.ts/DebugLifecycle/showWindowCloseConfirmation
class DebugLifecycle:	private async showWindowCloseConfirmation(numSessions: number): Promise<boolean> {
		let message: string;
		if (numSessions === 1) {
			message = nls.localize('debug.debugSessionCloseConfirmationSingular', "There is an active debug session, are you sure you want to stop it?");
		} else {
			message = nls.localize('debug.debugSessionCloseConfirmationPlural', "There are active debug sessions, are you sure you want to stop them?");
		}
		const res = await this.dialogService.confirm({
			message,
			type: 'warning',
			primaryButton: nls.localize('debug.stop', "Stop Debugging")
		});
		return !res.confirmed;
	}