.stable_diffusion.StableDiffusionXLPipelineOutput is
returned, otherwise a tuple is returned containing the output images.
  The call function to the pipeline for generation.  Examples:   Copied >>> # !pip install opencv-python transformers accelerate
>>> from diffusers import StableDiffusionXLControlNetXSPipeline, ControlNetXSModel, AutoencoderKL
>>> from diffusers.utils import load_image
>>> import numpy as np
>>> import torch

>>> import cv2