code: def g_prod_default(self, t, y, v):
      return self.prod(self.g(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 7 for calling the ForwardSDE obj's underlying member method code with example usage: obj.g_prod_default(t, y, v) and returns: self