extensions/markdown-language-features/server/src/workspace.ts/VsCodeClientWorkspace/readDirectory
class VsCodeClientWorkspace:	async readDirectory(resource: URI): Promise<[string, md.FileStat][]> {
		this.logger.log(md.LogLevel.Trace, 'VsCodeClientWorkspace: readDir', `${resource}`);
		return this.connection.sendRequest(protocol.fs_readDirectory, { uri: resource.toString() });
	}