Function filecoin_proofs_api::post::generate_fallback_sector_challenges

pub fn generate_fallback_sector_challenges(
    registered_post_proof_type: RegisteredPoStProof, 
    randomness: &ChallengeSeed, 
    pub_sectors: &[SectorId], 
    prover_id: ProverId
) -> Result<BTreeMap<SectorId, Vec<u64>>>