Function web3_etz::confirm::wait_for_confirmations

pub fn wait_for_confirmations<T, V, F>(
    eth: Eth<T>, 
    eth_filter: EthFilter<T>, 
    poll_interval: Duration, 
    confirmations: usize, 
    check: V
) -> Confirmations<T, V, F::Future> where
    T: Transport,
    V: ConfirmationCheck<Check = F>,
    F: IntoFuture<Item = Option<U256>, Error = Error>, 

Should be used to wait for confirmations