type: Optional = 'pil' return_dict: bool = True callback: Optional = None callback_steps: int = 1  ) → StableDiffusionPipelineOutput or tuple  Parameters   prompt (str or List[str]) —
The prompt or prompts to guide image upscaling.   image (torch.FloatTensor, PIL.Image.Image, np.ndarray, List[torch.FloatTensor], List[PIL.Image.Image], or List[np.ndarray]) —
Image or tensor representing an image batch to be upscaled. If it’s a tensor, it can be 