You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: eip2930.rs
    path of file: ./repos/ethers-rs/ethers-core/src/types/transaction
    
    the code of the file until where you have to start completion: use super::{eip2718::TypedTransaction, normalize_v};
use crate::types::{
    Address, Bytes, Signature, SignatureError, Transaction, TransactionRequest, H256, U256, U64,
};
use open_fastrlp::{
    RlpDecodable as FastRlpDecodable, RlpDecodableWrapper as FastRlpDecodableWrapper,
    RlpEncodable as FastRlp
    
    pub fn decode_signed_rlp(rlp: &rlp::Rlp) -> Result<(Self, Signature), Eip2930RequestError> {
        let mut offset = 0;
        let mut txn = Self::decode_base_rlp(rlp, &mut offset)?;

        let v = rlp.val_at(offset)?;
        offset += 1;
        let r = rlp.val_at(offset)?;
        offset += 1;
        let s = rlp.val_at(offset)?;

        let sig = Signature { r, s, v };
        txn.tx.from = Some(sig.recover(TypedTransaction::Eip2930(txn.clone()).sighash())?);
        Ok((txn, sig))
    }