src/vs/platform/files/browser/indexedDBFileSystemProvider.ts/IndexedDBFileSystemNode/doRead
class IndexedDBFileSystemNode:	private doRead(pathParts: string[]): IndexedDBFileSystemEntry | undefined {
		if (pathParts.length === 0) { return this.entry; }
		if (this.entry.type !== FileType.Directory) {
			throw ERR_UNKNOWN_INTERNAL('Internal error reading from IndexedDBFSNode -- expected directory at ' + this.entry.path);
		}
		const next = this.entry.children.get(pathParts[0]);

		if (!next) { return undefined; }
		return next.doRead(pathParts.slice(1));
	}