syntax_data: {"ast_node_type":"variable","tokens":[{"end":50,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let str_bytes = s.as_str().as_bytes();
context_before:         (ast::LitKind::Str(s, _), ty::Ref(_, inner_ty, _)) if inner_ty.is_str() => {
context_after:             ty::ValTree::from_raw_bytes(tcx, str_bytes)