code: def f_and_g_prod_default1(self, t, y, v):
      return self.f(t, y), self.g_prod(t, y, v)
  
imports: import abc
  import torch
  from torch import nn
  from .None import misc
  from ..settings import NOISE_TYPES, SDE_TYPES
  from ..types import Tensor
label_desc: Use image node_id 8 for calling the ForwardSDE obj's underlying member method code with example usage: obj.f_and_g_prod_default1(t, y, v) and returns: self,  self