How to create just a p2p topics?

[iwhy]

my code here:
``
var topic1 = tinode.newTopicWith("usrFqGScSWNnDU");
topic1.isSubscribed = true;

print(topic1.isP2P());
print(topic1.private);

// var topic1 = tinode.getTopic(topicName: "dao_user_alice_vlog");
var pp = await tinode.subscribe(
'frank', MetaGetBuilder(topic1).withLaterSub(null).build(), //SetParams()
SetParams(
tags: ["travel", "vlog"],
// desc: TopicDescription(),
sub: TopicSubscription(
user: tinode.getCurrentUserId(),
online: true,
topic: "frank",
created: DateTime.now().toUtc(),
// public: {"fn": "Frank Singer"},
),
),
);

print(pp);

// topic1.
// topic1.invite("alice", "JRWS");
var msg2 = topic1.createMessage("my new message", false);
await topic1.publishMessage(msg2);``

The code don't create the topic?

what shall i do to create a simple p2p topic?

[or-else]

Please use forum for questions.