{"ast_node_type":"variable","tokens":[{"end":48,"kind":"keyword","start":0,"text":"let"}]}
    let attrs = ctxt.tcx.hir_attrs(id.hir_id());
fn attr_span_by_symbol(ctxt: &EntryContext<'_>, id: ItemId, sym: Symbol) -> Option<Span> {
    attr::find_by_name(attrs, sym).map(|attr| attr.span())