impl<Block, P, BI, CIDP, RClient, Proposer, CS> Collator<Block, P, BI, CIDP, RClient, Proposer, CS>
/// Returns true if this container chain is a parathread and the collator should skip this slot and not produce a block
let signature_digest_item = <DigestItem as NimbusCompatibleDigestItem>::nimbus_seal(signature);