Directories in zip

[nobody]

(I'm using D1)
Is it possible to create directories in a zip with std.zip? I couldn't find 
any info about that.
So far I've only figured out how to read/write files. (code below)

Or should I be using something else entirely if I want to create archives?

---
module main;

import std.stdio: writefln;
import std.file: read, write;
import std.zip;

void main()
{
 auto archive = new ZipArchive;
 auto member = new ArchiveMember;

 member.compressionMethod = 8; //0: none, 8: deflate
 member.name = `hello.txt`;
 member.expandedData = cast(ubyte[])`Hello`;
 archive.addMember(member);

 member = new ArchiveMember;
 member.compressionMethod = 8;
 member.name = `world.txt`;
 member.expandedData = cast(ubyte[])`World!`;
 archive.addMember(member);

 auto data = archive.build();
 write(`test.zip`,data);
 auto text = read(`test.zip`);
 auto archive2 = new ZipArchive(text);

 foreach (ArchiveMember mem; archive2.directory)
 {
  archive2.expand(mem);
  writefln(cast(char[])mem.expandedData);
 }
}
---