docs: public ListPhoneNumberOrdersResult withPhoneNumberOrders(PhoneNumberOrder... phoneNumberOrders) {
          if (this.phoneNumberOrders == null) {
              setPhoneNumberOrders(new java.util.ArrayList<PhoneNumberOrder>(phoneNumberOrders.length));
          }
          for (PhoneNumberOrder ele : phoneNumberOrders) {
              this.phoneNumberOrders.add(ele);
          }
          return this;
      }