when not using guidance (i.e., ignored if guidance_scale is less than 1). For
PixArt-Alpha, this should be "".   do_classifier_free_guidance (bool, optional, defaults to True) —
whether to use classifier free guidance or not   num_images_per_prompt (int, optional, defaults to 1) —
number of images that should be generated per prompt
device — (torch.device, optional):
torch device to place the resulting embeddings on   prompt_embeds (torch.Float