src/vs/platform/files/node/diskFileSystemProviderServer.ts/AbstractDiskFileSystemProviderChannel/listen
class AbstractDiskFileSystemProviderChannel:	listen(ctx: T, event: string, arg: any): Event<any> {
		const uriTransformer = this.getUriTransformer(ctx);

		switch (event) {
			case 'fileChange': return this.onFileChange(uriTransformer, arg[0]);
			case 'readFileStream': return this.onReadFileStream(uriTransformer, arg[0], arg[1]);
		}

		throw new Error(`Unknown event ${event}`);
	}