neOutput or tuple
  
If return_dict is True, ImagePipelineOutput is returned, otherwise a tuple is
returned where the first element is a list with the generated images
  Function invoked when calling the pipeline for generation.  Examples:   Copied >>> import torch
>>> from diffusers import PixArtAlphaPipeline

>>> # You can replace the checkpoint id with "PixArt-alpha/PixArt-XL-2-512x512" too.
>>> pipe = PixArtAlphaPipeline.from_pretrained("Pi