Function pallet_bridge_relayers::extension::per_message::ensure_priority_boost_is_sane

pub fn ensure_priority_boost_is_sane<Runtime, MessagesInstance, PriorityBoostPerMessage>(
    tip_boost_per_message: <<Runtime as Config>::OnChargeTransaction as OnChargeTransaction<Runtime>>::Balance,
)
where
    Runtime: Config + Config<MessagesInstance>,
    MessagesInstance: 'static,
    PriorityBoostPerMessage: Get<TransactionPriority>,
    Runtime::RuntimeCall: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo>,
    <<Runtime as Config>::OnChargeTransaction as OnChargeTransaction<Runtime>>::Balance: Send + Sync + FixedPointOperand,

Ensures that the value of PriorityBoostPerMessage matches the value of tip_boost_per_message.

We want two transactions, TX1 with N messages and TX2 with N+1 messages, have almost the same priority if we’ll add tip_boost_per_message tip to the TX1. We want to be sure that if we add plain PriorityBoostPerMessage priority to TX1, the priority will be close to TX2 as well.