docs: public AdminCreateUserRequest withDesiredDeliveryMediums(DeliveryMediumType... desiredDeliveryMediums) {
          java.util.ArrayList<String> desiredDeliveryMediumsCopy = new java.util.ArrayList<String>(desiredDeliveryMediums.length);
          for (DeliveryMediumType value : desiredDeliveryMediums) {
              desiredDeliveryMediumsCopy.add(value.toString());
          }
          if (getDesiredDeliveryMediums() == null) {
              setDesiredDeliveryMediums(desiredDeliveryMediumsCopy);
          } else {
              getDesiredDeliveryMediums().addAll(desiredDeliveryMediumsCopy);
          }
          return this;
      }