}

// xlFlags contains flags on the object.
// This can be extended up to 64 bits without breaking compatibility.
type xlFlags uint8

const (
	xlFlagFreeVersion xlFlags = 1 << iota
	xlFlagUsesDataDir
	xlFlagInlineData
)

func (x xlFlags) String() string {
	var s strings.Builder
	if x&xlFlagFreeVersion != 0 {
		s.WriteString("FreeVersion")
	}
	if x&xlFlagUsesDataDir != 0 {