[TASK] Use identifier constants for the upgrade wizards

Classes/Updates/UpdateGermanAsDefault.php

@@ -35,6 +35,10 @@ use TYPO3\CMS\Install\Updates\UpgradeWizardInterface;
  *    Makes german templates the default and former default as english templates
  */
 class UpdateGermanAsDefault implements UpgradeWizardInterface {
+	/**
+	 * The wizard identifier
+	 */
+	const IDENTIFIER = 'tx_sgmail_update_german_as_default';
 
 	/**
 	 * @var string
@@ -45,7 +49,7 @@ class UpdateGermanAsDefault implements UpgradeWizardInterface {
 	 * @return string
 	 */
 	public function getIdentifier(): string {
-		return 'tx_sgmail_update_german_as_default';
+		return self::IDENTIFIER;
 	}
 
 	/**

Classes/Updates/UpdateLanguages.php

@@ -37,6 +37,10 @@ use TYPO3\CMS\Install\Updates\UpgradeWizardInterface;
  * Fix all incorrect / deprecated language codes (be languages instead of sys languages) in the database
  */
 class UpdateLanguages implements UpgradeWizardInterface {
+	/**
+	 * The wizard identifier
+	 */
+	const IDENTIFIER = 'tx_sgmail_update_languages';
 
 	/**
 	 * @var array
@@ -62,7 +66,7 @@ class UpdateLanguages implements UpgradeWizardInterface {
 	 * @return string
 	 */
 	public function getIdentifier(): string {
-		return 'tx_sgmail_update_languages';
+		return self::IDENTIFIER;
 	}
 
 	/**

Classes/Updates/UpdatePidToSiteRoot.php

@@ -37,6 +37,10 @@ use TYPO3\CMS\Install\Updates\UpgradeWizardInterface;
  * Migrate template db entries to the correct root pages
  */
 class UpdatePidToSiteRoot implements UpgradeWizardInterface {
+	/**
+	 * The wizard identifier
+	 */
+	const IDENTIFIER = 'tx_sgmail_update_pid_to_site_root';
 
 	/**
 	 * @var array
@@ -61,7 +65,7 @@ class UpdatePidToSiteRoot implements UpgradeWizardInterface {
 	 * @return string
 	 */
 	public function getIdentifier(): string {
-		return 'tx_sgmail_update_pid_to_site_root';
+		return self::IDENTIFIER;
 	}
 
 	/**

Classes/Updates/UpdateSendingTimes.php

@@ -35,6 +35,11 @@ use TYPO3\CMS\Install\Updates\UpgradeWizardInterface;
  * Update the correct sending times (if any)
  */
 class UpdateSendingTimes implements UpgradeWizardInterface {
+	/**
+	 * The wizard identifier
+	 */
+	const IDENTIFIER = 'tx_sgmail_update_sending_times';
+
 	/**
 	 * @var string
 	 */

ext_localconf.php

@@ -31,10 +31,10 @@ call_user_func(
 			\SGalinski\SgMail\Command\SendMailCommandController::class;
 
 		// add upgrade wizard for moving all db entries to their respected siteroot
-		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update']['tx_sgmail_update_pid_to_site_root'] = \SGalinski\SgMail\Updates\UpdatePidToSiteRoot::class;
-		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update']['tx_sgmail_update_sending_times'] = \SGalinski\SgMail\Updates\UpdateSendingTimes::class;
-		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update']['tx_sgmail_update_languages'] = \SGalinski\SgMail\Updates\UpdateLanguages::class;
-		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update']['tx_sgmail_update_german_as_default'] = \SGalinski\SgMail\Updates\UpdateGermanAsDefault::class;
+		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update'][\SGalinski\SgMail\Updates\UpdatePidToSiteRoot::IDENTIFIER] = \SGalinski\SgMail\Updates\UpdatePidToSiteRoot::class;
+		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update'][\SGalinski\SgMail\Updates\UpdateSendingTimes::IDENTIFIER] = \SGalinski\SgMail\Updates\UpdateSendingTimes::class;
+		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update'][\SGalinski\SgMail\Updates\UpdateLanguages::IDENTIFIER] = \SGalinski\SgMail\Updates\UpdateLanguages::class;
+		$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update'][\SGalinski\SgMail\Updates\UpdateGermanAsDefault::IDENTIFIER] = \SGalinski\SgMail\Updates\UpdateGermanAsDefault::class;
 
 		if (TYPO3_MODE === 'BE') {
 			\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTypoScriptSetup(