code: def forward(self, x):
      return self.seq_1(x) + self.seq_2(x)
  
imports: import unittest
  import torch
  import torch.nn
  from classy_vision.generic.profiler import compute_activations, compute_flops, count_params, get_shape
  from classy_vision.models import build_model
  from test.generic.config_utils import get_test_model_configs
label_desc: Use image node_id 2 for calling the TestModel2 obj's underlying member method code with example usage: obj.forward(x) and returns: unknown