macro_rules! __impl_test_ext_for_relay_chain { ($name:ident, $network:ident, $genesis:expr, $on_init:expr, $api_version:tt) => { ... }; (@impl $name:ident, $network:ident, $genesis:expr, $on_init:expr, $api_version:ident, $local_ext:ident, $global_ext:ident) => { ... }; }