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: models.rs
    path of file: ./repos/reth/testing/ef-tests/src
    
    the code of the file until where you have to start completion: //! Shared models for <https://github.com/ethereum/tests>

use crate::{assert::assert_equal, Error};
use reth_db::{
    cursor::DbDupCursorRO,
    tables,
    transaction::{DbTx, DbTxMut},
};
use reth_primitives::{
    keccak256, Account as RethAccount, Address, Bloom, Bytecode, Bytes, ChainSpec,
    ChainSpecBuilder, Header as RethHeader, SealedHeader, StorageEntry, Withdrawals, B256, B64,
    U256,
};
use serde::Deserialize;
use std::{collections::BTreeMap, ops::Deref};

/// The definition of a blockchain test.
#[derive(Debug, PartialEq, Eq, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct BlockchainTest {
    /// Genesis block header.
    pub genesis_block_header: Header,
    /// RLP encoded genesis block.
    #[serde(rename = "genesisRLP")]
    pub genesis_rlp: Option<Byt
    
    fn from(value: Header) -> Self {
        let header = RethHeader {
            base_fee_per_gas: value.base_fee_per_gas.map(|v| v.to::<u64>()),
            beneficiary: value.coinbase,
            difficulty: value.difficulty,
            extra_data: value.extra_data,
            gas_limit: value.gas_limit.to::<u64>(),
            gas_used: value.gas_used.to::<u64>(),
            mix_hash: value.mix_hash,
            nonce: u64::from_be_bytes(value.nonce.0),
            number: value.number.to::<u64>(),
            timestamp: value.timestamp.to::<u64>(),
            transactions_root: value.transactions_trie,
            receipts_root: value.receipt_trie,
            ommers_hash: value.uncle_hash,
            state_root: value.state_root,
            parent_hash: value.parent_hash,
            logs_bloom: value.bloom,
            withdrawals_root: value.withdrawals_root,
            blob_gas_used: value.blob_gas_used.map(|v| v.to::<u64>()),
            excess_blob_gas: value.excess_blob_gas.map(|v| v.to::<u64>()),
            parent_beacon_block_root: value.parent_beacon_block_root,
        };
        header.seal(value.hash)
    }