25 guidance_scale: float = 3.0 negative_prompt: Union = None num_images_per_prompt: Optional = 1 generator: Union = None prompt_embeds: Optional = None negative_prompt_embeds: Optional = None attention_mask: Optional = None negative_attention_mask: Optional = None output_type: Optional = 'pil' return_dict: bool = True callback_on_step_end: Optional = None callback_on_step_end_tensor_inputs: List = ['latents'] **kwargs  ) → ImagePipelineOutput o