code: def __init__(self, dim: int):
      super(Concatenate, self).__init__()
      self.dim = dim
  
imports: from typing import List, Optional
  from collections import deque
  import math
  import torch
  from torch import Tensor
  from torch import nn
  from torch.distributions import Distribution
  from torch.distributions import Normal
label_desc: Use image node_id 1 to create a new Concatenate object from inherited base classes: nn with example: obj = Concatenate(dim)