cified is passed along to the AttentionProcessor as defined under
self.processor in
diffusers.models.attention_processor.   Returns 
~pipelines.stable_diffusion.IFPipelineOutput or tuple
  
~pipelines.stable_diffusion.IFPipelineOutput if return_dict is True, otherwise a tuple. When returning a tuple, the first element is a list with the generated images, and the second element is a list of bools denoting whether the corresponding generated imag