syntax_data: {"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let ty::GenericArgKind::Type(ty) = arg.kind() {
context_before:     for (i, arg) in args.iter().enumerate() {
context_after:             if params_in_repr.contains(i as u32) {