+ /**
+ * Get the currency in use.
+ *
+ * This just defaults to getting the default currency
+ * as other currencies are not supported on the membership
+ * forms at the moment.
+ *
+ * @param array $submittedValues
+ *
+ * @return string
+ */
+ public function getCurrency($submittedValues = []): string {
+ return CRM_Core_Config::singleton()->defaultCurrency;
+ }
+