Various code cleanup.

app/Console/Commands/UpgradeDatabase.php

@@ -35,8 +35,10 @@ use Schema;
 /**
  * Class UpgradeDatabase
  *
- * @SuppressWarnings(PHPMD.CouplingBetweenObjects) // it just touches a lot of things.
+ * Upgrade user database.
  *
+ *
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects) // it just touches a lot of things.
  * @package FireflyIII\Console\Commands
  */
 class UpgradeDatabase extends Command
@@ -138,6 +140,9 @@ class UpgradeDatabase extends Command
 
     /**
      * Each (asset) account must have a reference to a preferred currency. If the account does not have one, it's forced upon the account.
+     *
+     * @SuppressWarnings(PHPMD.CyclomaticComplexity) // it's seven but it can't really be helped.
+     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
      */
     public function updateAccountCurrencies(): void
     {
@@ -192,6 +197,8 @@ class UpgradeDatabase extends Command
      *
      * Both source and destination must match the respective currency preference of the related asset account.
      * So FF3 must verify all transactions.
+     *
+     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
      */
     public function updateOtherCurrencies(): void
     {
@@ -353,6 +360,12 @@ class UpgradeDatabase extends Command
      *
      * The transaction that is sent to this function MUST be the source transaction (amount negative).
      *
+     * Method is long and complex bit I'm taking it for granted.
+     *
+     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
+     * @SuppressWarnings(PHPMD.NPathComplexity)
+     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
+     *
      * @param Transaction $transaction
      */
     private function updateTransactionCurrency(Transaction $transaction): void