src/vs/workbench/services/files/browser/elevatedFileService.ts/BrowserElevatedFileService/writeFileElevated
class BrowserElevatedFileService:	async writeFileElevated(resource: URI, value: VSBuffer | VSBufferReadable | VSBufferReadableStream, options?: IWriteFileOptions): Promise<IFileStatWithMetadata> {
		throw new Error('Unsupported');
	}