e > ( prompt: Union = None height: int = 1024 width: int = 1024 num_inference_steps: int = 60 timesteps: List = None guidance_scale: float = 8.0 negative_prompt: Union = None prompt_embeds: Optional = None negative_prompt_embeds: Optional = None num_images_per_prompt: Optional = 1 generator: Union = None latents: Optional = None output_type: Optional = 'pt' return_dict: bool = True callback_on_step_end: Optional = None callback_on_step_end_tens