func (s StorageSize) String() string {
	if s > 1000000 {
		return fmt.Sprintf("%.2f mB", s/1000000)
	} else if s > 1000 {
		return fmt.Sprintf("%.2f kB", s/1000)
	} else {
		return fmt.Sprintf("%.2f B", s)
	}
}
String implements the stringer interface.
package common
import (
	"fmt"
)
type StorageSize float64