code: def set_config(self):
      self.mstest_cfg_file = "configs/faster_rcnn/faster_rcnn_r34_fpn_multiscaletest_1x_coco.yml"
  
file_path: PaddleDetection/ppdet/modeling/tests/test_mstest.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import unittest
  from ppdet.core.workspace import load_config
  from ppdet.engine import Trainer
label_desc: Use image node_id 2 for calling the TestMultiScaleInference obj's underlying member method code with example usage: obj.set_config() without return types