code: func NewContiguousAllocationMap(max int, rangeSpec string) *AllocationBitmap {
  	a := AllocationBitmap{
  		strategy:  contiguousScanStrategy{},
  		allocated: big.NewInt(0),
  		count:     0,
  		max:       max,
  		rangeSpec: rangeSpec,
  	}
  	return &a
  }
docs: // NewContiguousAllocationMap creates an allocation bitmap using the contiguous scan strategy.