code: public ServiceFuture<GalleryImageInner> getAsync(String resourceGroupName, String labAccountName, String galleryImageName, final ServiceCallback<GalleryImageInner> serviceCallback) {
          return ServiceFuture.fromResponse(getWithServiceResponseAsync(resourceGroupName, labAccountName, galleryImageName), serviceCallback);
      }
docs: Get gallery image.
  
  @param resourceGroupName The name of the resource group.
  @param labAccountName The name of the lab Account.
  @param galleryImageName The name of the gallery Image.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object