let route = get_route(
&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph,
Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
let route = get_route(
&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph,
Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),