{"ast_node_type":"struct","tokens":[{"end":53,"kind":"keyword","start":0,"text":"pub"}]}
pub struct VecGraph<N: Idx, const BR: bool = false> {
/// If `BR` is true, the graph will store back-references, allowing you to get predecessors.
    // This is basically a `HashMap<N, (Vec<N>, If<BR, Vec<N>>)>` -- a map from a node index, to