Returns the version with the specified offset to the specified version.
public getRelativeVersion ( $version, $delta ) : string | null | ||
return | string | null | A version string, or null if the specified version is unknown or the specified delta is not within the list of available versions. |
public function getRelativeVersion($version, $delta) { $this->doRegister(); return parent::getRelativeVersion($version, $delta); }