code: func (lc *LedgerCommitter) GetPvtDataAndBlockByNum(seqNum uint64) (*ledger.BlockAndPvtData, error) {
  	return lc.PeerLedgerSupport.GetPvtDataAndBlockByNum(seqNum, nil)
  }
docs: // GetPvtDataAndBlockByNum retrieves private data and block for given sequence number