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