{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
    // Build up a set of all exported items in the AST. This is a set of all
fn effective_visibilities(tcx: TyCtxt<'_>, (): ()) -> &EffectiveVisibilities {
    // items which are reachable from external crates based on visibility.