No need for an id, can use ordinal.

libraries/push/api/src/main/kotlin/io/element/android/libraries/push/api/notifications/NotificationIdProvider.kt

@@ -33,7 +33,7 @@ object NotificationIdProvider {
     }
 
     fun getForegroundServiceNotificationId(type: ForegroundServiceType): Int {
-        return type.id * 10 + FOREGROUND_SERVICE_NOTIFICATION_ID
+        return type.ordinal * 10 + FOREGROUND_SERVICE_NOTIFICATION_ID
     }
 
     private fun getOffset(sessionId: SessionId): Int {
@@ -50,7 +50,7 @@ object NotificationIdProvider {
     private const val FOREGROUND_SERVICE_NOTIFICATION_ID = 4
 }
 
-enum class ForegroundServiceType(val id: Int) {
-    INCOMING_CALL(1),
-    ONGOING_CALL(2),
+enum class ForegroundServiceType {
+    INCOMING_CALL,
+    ONGOING_CALL,
 }