code: def test_finetune_faster_rcnn_fpn_fc7(self):
      # Add tempfile dir so that the encoder downloads data automatically for testing
      self._test_init(
          encoders.FinetuneFasterRcnnFpnFc7,
          in_dim=2048,
          model_data_dir=tempfile.TemporaryDirectory().name,
      )
  
imports: import tempfile
  import unittest
  import torch
  from mmf.modules import encoders
  from omegaconf import OmegaConf
  from tests.test_utils import setup_proxy, skip_if_no_pytorchvideo, skip_if_old_transformers
  from torch import nn
label_desc: Use image node_id 3 for calling the TestEncoders obj's underlying member method code with example usage: obj.test_finetune_faster_rcnn_fpn_fc7() without return types