src/vs/workbench/services/dialogs/browser/abstractFileDialogService.ts/AbstractFileDialogService/showSaveConfirm
class AbstractFileDialogService:	async showSaveConfirm(fileNamesOrResources: (string | URI)[]): Promise<ConfirmResult> {
		if (this.environmentService.isExtensionDevelopment && this.environmentService.extensionTestsLocationURI) {
			return ConfirmResult.DONT_SAVE; // no veto when we are in extension dev testing mode because we cannot assume we run interactive
		}

		return this.doShowSaveConfirm(fileNamesOrResources);
	}