@Parcelize
data class Order(
    @SerializedName("data")
    val data: OData? = null,

    @SerializedName("success")
    val success: Boolean? = null,

    @SerializedName("message")
    var message: String? = null,
@SerializedName("order_item")
    val orderItem: List<OrderItem>? = null
):Parcelable

@Parcelize
data class OData(
    //... anything else OData has
):Parcelable


@Parcelize
data class OrderItem(
    //... anything else OrderItem has
):Parcelable