code: def forward(self, x):
      x = self.conv1(x)
      x = self.bn1(x)
      x = self.relu(x)
      x = self.conv2(x)
      return x
  
imports: import torch
  import torch.nn
  from torch.nn import BatchNorm3d
label_desc: Use image node_id 2 for calling the Conv2Plus1D obj's underlying member method code with example usage: obj.forward(x) and returns: x