private ContractState GetHistoricalContractState(MPTTrie <StorageKey, StorageItem> trie, UInt160 script_hash)
{
const byte prefix = 8;
StorageKey skey = new KeyBuilder(NativeContract.ContractManagement.Id, prefix).Add(script_hash);
return(trie.TryGetValue(skey, out var value) ? value.GetInteroperable <ContractState>() : null);
}