{"ast_node_type":"variable","tokens":[{"end":87,"kind":"keyword","start":0,"text":"let"}]}
            let layout_for_cpp_like_fallback = if cpp_like_debuginfo && def.is_enum() {
            // `layout_for_cpp_like_fallback` will be `Some` if we want to use the fallback encoding.
                match tcx.layout_of(ty::TypingEnv::fully_monomorphized().as_query_input(t)) {