, num_inference_steps - 1]. See the
paper, Sect. 3.3.1.    Function invoked when calling the pipeline for generation.  backward_loop  < source > ( latents timesteps prompt_embeds guidance_scale callback callback_steps num_warmup_steps extra_step_kwargs add_text_embeds add_time_ids cross_attention_kwargs = None guidance_rescale: float = 0.0  ) → latents  Parameters   callback (Callable, optional) —
A function that calls every callback_steps step