code: def forward(self, x):
      x = self.conv(x)
      x = self.relu(x)
      x = x.view(x.shape[0], -1)
      x = self.dropout(x)
      x = self.linear(x)
      x = self.sigmoid(x)
      return x
  
imports: import math
  import unittest
  from unittest.mock import Mock
  import numpy
  import pytest
  import torch
  import torchmetrics
  from torch import nn
  from torch.utils.data import Dataset, DataLoader
  from baal.modelwrapper import ModelWrapper, mc_inference
  from baal.utils.metrics import ClassificationReport
label_desc: Use image node_id 2 for calling the SimpleModel obj's underlying member method code with example usage: obj.forward(x) and returns: x