Macro xcm_emulator::__impl_test_ext_for_parachain

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