Function add_rust_nodes_with 

pub fn add_rust_nodes_with<N, NodeIds, Items, Item, F>(
    driver: &mut Driver<'_>,
    num: N,
    config: RustNodeTestingConfig,
    f: F,
) -> (NodeIds, Items)
where
    N: Into<u16>,
    NodeIds: Default + Extend<ClusterNodeId>,
    Items: Default + Extend<Item>,
    F: FnMut(&State) -> Item,

Creates num Rust nodes in the cluster