let mut delta_set = DeltaSet::new();
lookup::fetch_channel_announcements(&mut delta_set, network_graph, &client, last_sync_timestamp).await;
println!("announcement channel count: {}", delta_set.len());
let mut delta_set = DeltaSet::new();
lookup::fetch_channel_announcements(&mut delta_set, network_graph, &client, last_sync_timestamp).await;
println!("announcement channel count: {}", delta_set.len());