code: def forward(self, x):
      if self._preact:
          x = F.relu(
              self.bn1(x), inplace=True
          )  # shortcut after preactivation
          y = self.conv1(x)
      else:
          # preactivation only for residual path
          y = self.bn1(x)
          if not self._remove_first_relu:
              y = F.relu(y, inplace=True)
          y = self.conv1(y)
  
      y = F.relu(self.bn2(y), inplace=True)
      y = self.conv2(y)
  
      if self._add_last_bn:
          y = self.bn3(y)
  
      y += self.shortcut(x)
      return y
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from collections import OrderedDict
label_desc: Use image node_id 2 for calling the BasicBlock obj's underlying member method code with example usage: obj.forward(x) and returns: y