StableCascadePriorPipelineOutput  
Output class for WuerstchenPriorPipeline.  
Args:
image_embeddings (`torch.Tensor` or `np.ndarray`)
Prior image embeddings for text prompt
prompt_embeds (`torch.Tensor`):
Text embeddings for the prompt.
negative_prompt_embeds (`torch.Tensor`):
Text embeddings for the negative prompt.