This is my restController: ``` @RestController cla...

# spring

[kasper.kondzielski]

This is my restController:

@RestController
class OrdersRestController(private val repository: ItemsRepository) {

    @PostMapping("/create_order")
    fun createOrder(@Valid @RequestBody orderRequest: OrderRequest): OrderSummary {
        //...
    }

and my model class:

data class OrderRequest(val items: List<QuantifiedItem>)

    data class QuantifiedItem(
            val itemId: Long,
            @get:Positive
            val quantity: Long
    )