{"ast_node_type":"function","tokens":[{"end":74,"kind":"keyword","start":0,"text":"fn"}]}
    fn new_visitor(&self, tcx: TyCtxt<'hir>) -> HirIdValidator<'a, 'hir> {
impl<'a, 'hir> HirIdValidator<'a, 'hir> {
        HirIdValidator { tcx, owner: None, hir_ids_seen: Default::default(), errors: self.errors }