{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
        // the pattern could resolve to a constant, verify that this is not the case
        let pat_id = source_map.node_pat(src.as_ref())?;
        if let crate::Pat::Bind { id, .. } = body[pat_id.as_pat()?] {