src/vs/workbench/services/files/browser/elevatedFileService.ts/BrowserElevatedFileService/isSupported
class BrowserElevatedFileService:	isSupported(resource: URI): boolean {
		// Saving elevated is currently not supported in web for as
		// long as we have no generic support from the file service
		// (https://github.com/microsoft/vscode/issues/48659)
		return false;
	}