code: public ServiceFuture<VirtualMachineScaleSetInner> getByResourceGroupAsync(String resourceGroupName, String vmScaleSetName, final ServiceCallback<VirtualMachineScaleSetInner> serviceCallback) {
          return ServiceFuture.fromResponse(getByResourceGroupWithServiceResponseAsync(resourceGroupName, vmScaleSetName), serviceCallback);
      }
docs: Display information about a virtual machine scale set.
  
  @param resourceGroupName The name of the resource group.
  @param vmScaleSetName The name of the VM scale set.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object