code: def test_construction_style(self):
      box = widgets.Box(box_style="warning")
      assert box.get_state()["box_style"] == "warning"
  
file_path: catboost/contrib/python/ipywidgets/py2/ipywidgets/widgets/tests/test_widget_box.py
imports: from unittest import TestCase
  from traitlets import TraitError
  import ipywidgets
label_desc: Use image node_id 3 for calling the TestBox obj's underlying member method code with example usage: obj.test_construction_style() without return types