referrerpolicy=no-referrer-when-downgrade
xcm_emulator

Macro __impl_test_ext_for_relay_chain

Source 
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) => { ... };
}