code: func (s *StatsRecorder) Get(base int64) bgzf.Block {
  	s.mu.Lock()
  	s.stats.Gets++
  	blk := s.Cache.Get(base)
  	if blk == nil {
  		s.stats.Misses++
  	}
  	s.mu.Unlock()
  	return blk
  }
docs: // Get returns the Block in the underlying Cache with the specified base or a nil
  // Block if it does not exist. It updates the gets and misses statistics.