code: def test_ROIGen_inputs():
      input_map = dict(
          LUT_file=dict(
              extensions=None,
              xor=["use_freesurfer_LUT"],
          ),
          aparc_aseg_file=dict(
              extensions=None,
              mandatory=True,
          ),
          freesurfer_dir=dict(
              requires=["use_freesurfer_LUT"],
          ),
          out_dict_file=dict(
              extensions=None,
              genfile=True,
          ),
          out_roi_file=dict(
              extensions=None,
              genfile=True,
          ),
          use_freesurfer_LUT=dict(
              xor=["LUT_file"],
          ),
      )
      inputs = ROIGen.input_spec()
  
      for key, metadata in list(input_map.items()):
          for metakey, value in list(metadata.items()):
              assert getattr(inputs.traits()[key], metakey) == value
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_ROIGen_inputs() without return types