Update find methods to return null

app/Repositories/Currency/CurrencyRepositoryInterface.php

@@ -60,6 +60,7 @@ interface CurrencyRepositoryInterface
      *
      * @param int $currencyId
      *
+     * @deprecated
      * @return TransactionCurrency
      */
     public function find(int $currencyId): TransactionCurrency;
@@ -67,12 +68,23 @@ interface CurrencyRepositoryInterface
     /**
      * Find by currency code.
      *
+     * @deprecated
+     *
      * @param string $currencyCode
      *
      * @return TransactionCurrency
      */
     public function findByCode(string $currencyCode): TransactionCurrency;
 
+    /**
+     * Find by currency code, return NULL if unfound.
+     *
+     * @param string $currencyCode
+     *
+     * @return TransactionCurrency|null
+     */
+    public function findByCodeNull(string $currencyCode): ?TransactionCurrency;
+
     /**
      * Find by currency name.
      *
@@ -91,6 +103,15 @@ interface CurrencyRepositoryInterface
      */
     public function findBySymbol(string $currencySymbol): TransactionCurrency;
 
+    /**
+     * Find by ID, return NULL if not found.
+     *
+     * @param int $currencyId
+     *
+     * @return TransactionCurrency|null
+     */
+    public function findNull(int $currencyId): ?TransactionCurrency;
+
     /**
      * @return Collection
      */