pub fn update_engine(
db: PreCachedDB,
block: Option<BlockHeader>,
vm_storage: Option<HashMap<Address, ResponseAccount>>,
account_updates: HashMap<Address, AccountUpdate>,
) -> Result<Vec<AccountUpdate>, PreCachedDBError>pub fn update_engine(
db: PreCachedDB,
block: Option<BlockHeader>,
vm_storage: Option<HashMap<Address, ResponseAccount>>,
account_updates: HashMap<Address, AccountUpdate>,
) -> Result<Vec<AccountUpdate>, PreCachedDBError>