semantic

type Version interface {
	// CompareStr returns an integer representing the sort order of the given string
	// when parsed as the concrete Version relative to the subject Version.
	//
	// The result will be 0 if v == w, -1 if v < w, or +1 if v > w.
	//
	// An error is returned if the given string is not a valid Version, with "valid"
	// being dependent on the underlying ecosystem of the concrete Version.
	CompareStr(str string) (int, error)
}