{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"generate_fn_def_assist(acc,"}]}
        generate_fn_def_assist(acc, fn_def, lifetime_loc, lifetime)
    if let Some(fn_def) = lifetime.syntax().ancestors().find_map(ast::Fn::cast) {
    } else if let Some(impl_def) = lifetime.syntax().ancestors().find_map(ast::Impl::cast) {