CodeInfoOf: StorageDescriptor<
    [Key: FixedSizeBinary<32>],
    {
        code_len: number;
        deposit: bigint;
        determinism: Enum<{ Enforced: undefined; Relaxed: undefined }>;
        owner: SS58String;
        refcount: bigint;
    },
    true,
    never,
>

A mapping from a contract's code hash to its code info.