More code for the split journal support.

app/Repositories/PiggyBank/PiggyBankRepositoryInterface.php

@@ -34,6 +34,13 @@ interface PiggyBankRepositoryInterface
      */
     public function destroy(PiggyBank $piggyBank): bool;
 
+    /**
+     * @param int $piggyBankid
+     *
+     * @return PiggyBank
+     */
+    public function find(int $piggyBankid): PiggyBank;
+
     /**
      * Get all events.
      *