code: def g_prod_and_gdg_prod_default(
      self, t, y, v1, v2
  ):  # For Ito/Stratonovich general/additive/scalar.
      raise NotImplementedError
  
imports: import torch
  from .None import base_sde
  from .None import misc
  from ..settings import NOISE_TYPES, SDE_TYPES
  from ..types import Sequence, TensorOrTensors
label_desc: Use image node_id 17 for calling the AdjointSDE obj's underlying member method code with example usage: obj.g_prod_and_gdg_prod_default(t, y, v1, v2) without return types