Macro substrate_relay_helper::declare_parachain_to_parachain_bridge_schema

macro_rules! declare_parachain_to_parachain_bridge_schema {
    ($left_parachain:ident, $left_chain:ident, $right_parachain:ident, $right_chain:ident) => { ... };
}

Create set of configuration objects specific to parachain-to-parachain relayer.