pub fn create_node_chanmgrs<'a, 'b>(
    node_count: usize,
    cfgs: &'a Vec<NodeCfg<'b>>,
    node_config: &[Option<UserConfig>],
) -> Vec<ChannelManager<&'a TestChainMonitor<'b>, &'b TestBroadcaster, &'a TestKeysInterface, &'a TestKeysInterface, &'a TestKeysInterface, &'b TestFeeEstimator, &'a TestRouter<'b>, &'b TestLogger>>