code: def __init__(self):
      super().__init__()
      self.conv1 = torch.nn.Conv2d(1, 1, 1)
      self.conv2 = torch.nn.Conv2d(1, 1, 1)
  
file_path: mmdetection/tests/test_engine/test_schedulers/test_quadratic_warmup.py
imports: from unittest import TestCase
  import torch
  import torch.nn.functional
  import torch.optim
  from mmengine.optim.scheduler import _ParamScheduler
  from mmengine.testing import assert_allclose
  from mmdet.engine.schedulers import QuadraticWarmupLR, QuadraticWarmupMomentum, QuadraticWarmupParamScheduler
label_desc: Use image node_id 1 to create a new ToyModel object from inherited base classes: torch.nn with example: obj = ToyModel()