{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"for"}]}
        for attr_name in field.attrs.iter().filter_map(|at| at.path().get_ident()) {
    for field in structure.variants().iter().flat_map(|v| v.ast().fields.iter()) {
            if attr_name == "subdiagnostic" {