code: public ServiceFuture<OperationStatusResponseInner> beginReimageAllAsync(String resourceGroupName, String vmScaleSetName, final ServiceCallback<OperationStatusResponseInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginReimageAllWithServiceResponseAsync(resourceGroupName, vmScaleSetName), serviceCallback);
      }
docs: Reimages all the disks ( including data disks ) in the virtual machines in a VM scale set. This operation is only supported for managed disks.
  
  @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