{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"generic_def_for_node(sema,"}]}
        generic_def_for_node(sema, &arg_list, &token)?;
    let (generics_def, mut active_parameter, first_arg_is_non_lifetime, variant) =
    let mut res = SignatureHelp {