code: def forward(
      self,
      x: torch.Tensor,
      h: Optional[Tuple[torch.Tensor, torch.Tensor]] = None,
  ) -> Tuple[torch.Tensor, Tuple[torch.Tensor, torch.Tensor]]:
      x, h = self.lstm(x, h)
  
      if self.dropout:
          x = self.dropout(x)
  
      return x, h
  
imports: import math
  from typing import List, Optional, Tuple, Union
  import numpy
  import torch
  from nemo.utils import logging
label_desc: Use image node_id 2 for calling the LSTMDropout obj's underlying member method code with example usage: obj.forward(x, h) and returns: x,  h