code: def __init__(self, *args, **kwargs):
      super(TestONNXLightGBMConverter, self).__init__(*args, **kwargs)
  
imports: import unittest
  import warnings
  import numpy
  from onnxconverter_common.data_types import FloatTensorType
  from hummingbird.ml import convert
  from hummingbird.ml import constants
  from hummingbird.ml._utils import onnx_ml_tools_installed, onnx_runtime_installed, lightgbm_installed
label_desc: Use image node_id 1 to create a new TestONNXLightGBMConverter object from inherited base classes: unittest with example: obj = TestONNXLightGBMConverter()