*/ class Upgrade_Plugin extends Upgrader { /** * Lists of upgrades * * @var string[] */ protected $upgrades = array( '1.1.2.2' => 'Inc/Upgrades/upgrade-1.1.2.2.php', // path should be from root except trailingslash of the beginning. '1.1.9' => 'Inc/Upgrades/upgrade-1.1.9.php', ); } }