Function parity_rpc::dispatch::default_max_priority_fee_per_gas

pub fn default_max_priority_fee_per_gas<C, M>(
    client: &C, 
    miner: &M, 
    percentile: usize, 
    eip1559_transition: BlockNumber
) -> U256 where
    C: BlockChainClient,
    M: MinerService, 

Extract the default priority gas price from a client and miner.