 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 
ImagePipelineOutput or tuple
    Function invoked when calling the pipeline for generation. Examples:  KandinskyV22InpaintCombinedPipeline  class diffusers.KandinskyV22InpaintCombinedPipeline  < source > ( u