code: public Observable<VirtualMachineImageInner> getAsync(String location, String publisherName, String offer, String skus, String version) {
          return getWithServiceResponseAsync(location, publisherName, offer, skus, version).map(new Func1<ServiceResponse<VirtualMachineImageInner>, VirtualMachineImageInner>() {
              @Override
              public VirtualMachineImageInner call(ServiceResponse<VirtualMachineImageInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets a virtual machine image.
  
  @param location The name of a supported Azure region.
  @param publisherName A valid image publisher.
  @param offer A valid image publisher offer.
  @param skus A valid image SKU.
  @param version A valid image SKU version.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the VirtualMachineImageInner object