//! type ChainFilter = dyn lightning::chain::Filter;
//! type DataPersister = dyn lightning::chain::channelmonitor::Persist<lightning::chain::keysinterface::InMemorySigner>;
//! type ChainMonitor = lightning::chain::chainmonitor::ChainMonitor<lightning::chain::keysinterface::InMemorySigner, Arc<ChainFilter>, Arc<TxBroadcaster>, Arc<FeeEstimator>, Arc<Logger>, Arc<DataPersister>>;
//! type ChainFilter = dyn lightning::chain::Filter;
//! type DataPersister = dyn lightning::chain::channelmonitor::Persist<lightning::chain::keysinterface::InMemorySigner>;
//! type ChainMonitor = lightning::chain::chainmonitor::ChainMonitor<lightning::chain::keysinterface::InMemorySigner, Arc<ChainFilter>, Arc<TxBroadcaster>, Arc<FeeEstimator>, Arc<Logger>, Arc<DataPersister>>;