code: def forward(self, x):
      x = super(Conv2D, self).forward(x)
      if self.norm is not None:
          x = self.norm(x)
      if self.activation is not None:
          x = self.activation(x)
      return x
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
label_desc: Use image node_id 2 for calling the Conv2D obj's underlying member method code with example usage: obj.forward(x) and returns: x