docs: public ServiceFuture<VirtualMachineScaleSetVMInner> beginUpdateAsync(String resourceGroupName, String vmScaleSetName, String instanceId, VirtualMachineScaleSetVMInner parameters, final ServiceCallback<VirtualMachineScaleSetVMInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginUpdateWithServiceResponseAsync(resourceGroupName, vmScaleSetName, instanceId, parameters), serviceCallback);
      }