ack function will be called. If not specified, the callback will be
called at every step.   clip_skip (int, optional) —
Number of layers to be skipped from CLIP while computing the prompt embeddings. A value of 1 means that
the output of the pre-final layer will be used for computing the prompt embeddings.   Returns 
StableDiffusionPipelineOutput or tuple
  
StableDiffusionPipelineOutput if return_dict is True, otherwise a tuple. When returning