code: func (l *MockLedger) NewFilteredBlock(channelID string, filteredTx ...*pb.FilteredTransaction) {
  	l.Lock()
  	defer l.Unlock()
  	l.Store(NewFilteredBlockWrapper(l.blockProducer.NewFilteredBlock(channelID, filteredTx...)))
  }
docs: // NewFilteredBlock stores a new filtered block on the ledger