{"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"if"}]}
        if let ([], [bound]) = (&potential_assoc_types[..], &trait_bounds) {
        let mut in_expr_or_pat = false;
            let grandparent = tcx.parent_hir_node(tcx.parent_hir_id(bound.trait_ref.hir_ref_id));