{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
    let unexpanded = ctx.find_node_at_offset::<ast::MacroCall>()?;
pub(crate) fn term_search(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> {
    let syntax = unexpanded.syntax();