Made properties overridable and variable

BankingClientModel/src/commonMain/kotlin/net/codinux/banking/client/model/securitiesaccount/Holding.kt

@@ -7,45 +7,45 @@ import net.codinux.banking.client.model.config.NoArgConstructor
 
 @NoArgConstructor
 open class Holding(
-    val name: String,
+    open var name: String,
 
-    val isin: String? = null,
-    val wkn: String? = null,
+    open var isin: String? = null,
+    open var wkn: String? = null,
 
-    val quantity: Int? = null,
-    val currency: String? = null,
+    open var quantity: Int? = null,
+    open var currency: String? = null,
 
     /**
      * Gesamter Kurswert aller Einheiten des Wertpapiers
      */
-    val totalBalance: Amount? = null,
+    open var totalBalance: Amount? = null,
     /**
      * Aktueller Kurswert einer einzelnen Einheit des Wertpapiers
      */
-    val marketValue: Amount? = null,
+    open var marketValue: Amount? = null,
 
     /**
      * Änderung in Prozent Aktueller Kurswert gegenüber Einstandspreis.
      */
-    val performancePercentage: Float? = null,
+    open var performancePercentage: Float? = null,
 
     /**
      * Gesamter Einstandspreis (Kaufpreis)
      */
-    val totalCostPrice: Amount? = null,
+    open var totalCostPrice: Amount? = null,
     /**
      * (Durchschnittlicher) Einstandspreis/-kurs einer Einheit des Wertpapiers
      */
-    val averageCostPrice: Amount? = null,
+    open var averageCostPrice: Amount? = null,
 
     /**
      * Zeitpunkt zu dem der Kurswert bestimmt wurde
      */
-    val pricingTime: Instant? = null,
+    open var pricingTime: Instant? = null,
 
-    val buyingDate: LocalDate? = null,
+    open var buyingDate: LocalDate? = null,
 ) {
-    val identifier: String by lazy { "${isin}_$wkn" }
+    open val identifier: String by lazy { "${isin}_$wkn" }
 
     override fun toString() = "$name $totalBalance $currency"
 }