_third_order_update  < source > ( model_output_list: List *args sample: FloatTensor = None **kwargs  ) → torch.FloatTensor  Parameters   model_output_list (List[torch.FloatTensor]) —
The direct outputs from learned diffusion model at current and latter timesteps.   timestep (int) —
The current and latter discrete timestep in the diffusion chain.   prev_timestep (int) —
The previous discrete timestep in the diffusion chain.   sample (torch.Float