defaults to "pil") —
The output format of the generate image. Choose between
PIL: PIL.Image.Image or np.array.   return_dict (bool, optional, defaults to True) —
Whether or not to return a ~pipelines.stable_diffusion.StableDiffusionXLPipelineOutput instead of a
plain tuple.   callback (Callable, optional) —
A function that will be called every callback_steps steps during inference. The function will be
called with the following arguments: callb