// nodes[0] <-- accept_channel --- nodes[1]
let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
// nodes[0] <-- accept_channel --- nodes[1]
let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());