Version: PlainDescriptor<
    {
        apis: [FixedSizeBinary<8>, number][];
        authoring_version: number;
        impl_name: string;
        impl_version: number;
        spec_name: string;
        spec_version: number;
        system_version: number;
        transaction_version: number;
    },
>

Get the chain's in-code version.