src/vs/platform/files/common/fileService.ts/FileService/doPipeUnbuffered
class FileService:	private async doPipeUnbuffered(sourceProvider: IFileSystemProviderWithFileReadWriteCapability, source: URI, targetProvider: IFileSystemProviderWithFileReadWriteCapability, target: URI): Promise<void> {
		return this.writeQueue.queueFor(target, this.getExtUri(targetProvider).providerExtUri).queue(() => this.doPipeUnbufferedQueued(sourceProvider, source, targetProvider, target));
	}