code: func (s *store) ProcessCollsEligibilityEnabled(committingBlk uint64, nsCollMap map[string][]string) error {
  	key := encodeCollElgKey(committingBlk)
  	m := newCollElgInfo(nsCollMap)
  	val, err := encodeCollElgVal(m)
  	if err != nil {
  		return err
  	}
  	batch := leveldbhelper.NewUpdateBatch()
  	batch.Put(key, val)
  	if err = s.db.WriteBatch(batch, true); err != nil {
  		return err
  	}
  	s.collElgProcSync.notify()
  	return nil
  }
docs: // ProcessCollsEligibilityEnabled implements the function in the interface `Store`