check_inherents: RuntimeDescriptor<[block: {
    extrinsics: Binary;
    header: {
        digest: DigestItem;
        extrinsics_root: FixedSizeBinary<32>;
        number: number;
        parent_hash: FixedSizeBinary<32>;
        state_root: FixedSizeBinary<32>;
    };
}, data: [FixedSizeBinary<8>, Binary]], {
    errors: [FixedSizeBinary<8>, Binary];
    fatal_error: boolean;
    okay: boolean;
}>

Check that the inherents are valid. The inherent data will vary from chain to chain.