onNewRealtimeRoom(payload) {
    const roomMessageId = this.publisher.sendNewRealtimeRoom(payload);

    debug(
      "[%s] Broadcasting new realtime room %s (message: %d)",
      this.nodeId,
      payload.id,
      roomMessageId,
    );

    const icpair = fromKoncordeIndex(payload.index);

    this.fullState.addRealtimeRoom(
      payload.id,
      icpair.index,
      icpair.collection,
      payload.filter,
      {
        messageId: roomMessageId,
        nodeId: this.nodeId,
        subscribers: 0,
      },
    );
  }
Triggered whenever a realtime room is created on this node

@param  {NormalizedFilter} payload
@return {void}