OrderTrackingSignal constructor
      
      OrderTrackingSignal({ 
    
    
- Price? customerShippingFee,
- String? deliveryPostalCode,
- String? deliveryRegionCode,
- List<LineItemDetails> ? lineItems,
- String? merchantId,
- DateTime? orderCreatedTime,
- String? orderId,
- String? orderTrackingSignalId,
- List<ShipmentLineItemMapping> ? shipmentLineItemMapping,
- List<ShippingInfo> ? shippingInfo,
Implementation
OrderTrackingSignal({
  this.customerShippingFee,
  this.deliveryPostalCode,
  this.deliveryRegionCode,
  this.lineItems,
  this.merchantId,
  this.orderCreatedTime,
  this.orderId,
  this.orderTrackingSignalId,
  this.shipmentLineItemMapping,
  this.shippingInfo,
});