{"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"let"}]}
    let loc = db.lookup_intern_macro_call(actual_macro_call);
) -> Option<(SyntaxNode, Vec<(SyntaxToken, u8)>)> {
    let (_, _, span) = db.macro_arg_considering_derives(actual_macro_call, &loc.kind);