ipped predicted original sample. Necessary
because predicted original sample is clipped to [-1, 1] when self.config.clip_sample is True. If no
clipping has happened, “corrected” model_output would coincide with the one provided as input and
use_clipped_model_output has no effect.   generator (torch.Generator, optional) —
A random number generator.   variance_noise (torch.FloatTensor) —
Alternative to generating noise with generator by directly 