code: public ServiceFuture<ZoneInner> getByResourceGroupAsync(String resourceGroupName, String zoneName, final ServiceCallback<ZoneInner> serviceCallback) {
          return ServiceFuture.fromResponse(getByResourceGroupWithServiceResponseAsync(resourceGroupName, zoneName), serviceCallback);
      }
docs: Gets a DNS zone. Retrieves the zone properties, but not the record sets within the zone.
  
  @param resourceGroupName The name of the resource group.
  @param zoneName The name of the DNS zone (without a terminating dot).
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object