code: func (m *Meter) Skip(size int64) {
  	if m == nil {
  		return
  	}
  
  	defer m.update(false)
  	atomic.AddInt64(&m.finishedFiles, 1)
  	atomic.AddInt64(&m.currentBytes, size)
  }
docs: // Skip tells the progress meter that a file of size `size` is being skipped
  // because the transfer is unnecessary.