code: def _get_place(self, force_to_use_cpu=False):
      # this option for ops that only have cpu kernel
      if force_to_use_cpu:
          return "cpu"
      else:
          return paddle.device.get_device()
  
file_path: PaddleDetection/ppdet/modeling/tests/test_base.py
imports: from __future__ import print_function
  import unittest
  import contextlib
  import paddle
  from paddle.static import Program
label_desc: Use image node_id 3 for calling the LayerTest obj's underlying member method code with example usage: obj._get_place(force_to_use_cpu) and returns: str, paddle