al) —
The list of tensor inputs for the callback_on_step_end function. The tensors specified in the list
will be passed as callback_kwargs argument. You will only be able to include variables listed in the
._callback_tensor_inputs attribute of your pipeline class.   Returns 
~pipelines.stable_diffusion.AltDiffusionPipelineOutput or tuple
  
If return_dict is True, ~pipelines.stable_diffusion.AltDiffusionPipelineOutput is returned,
otherwise a t