in src/main/scala/ZuoraService.scala [140:145]
def writes(taxationItemQuery: TaxationItemQuery) = Json.obj(
"queryString" -> s"select id, TaxAmount from taxationItem where invoiceId='${taxationItemQuery.invoice.id}'"
)
}
implicit val invoiceItemAdjustmentWrites = new Writes[InvoiceItemAdjustment] {