code: public Observable<VirtualMachineInner> createOrUpdateAsync(String resourceGroupName, String vmName, VirtualMachineInner parameters) {
          return createOrUpdateWithServiceResponseAsync(resourceGroupName, vmName, parameters).map(new Func1<ServiceResponse<VirtualMachineInner>, VirtualMachineInner>() {
              @Override
              public VirtualMachineInner call(ServiceResponse<VirtualMachineInner> response) {
                  return response.body();
              }
          });
      }
docs: The operation to create or update a virtual machine.
  
  @param resourceGroupName The name of the resource group.
  @param vmName The name of the virtual machine.
  @param parameters Parameters supplied to the Create Virtual Machine operation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable for the request