code: def teardown_method(self):
      tm.close()
  
imports: import numpy
  import pandas.util.testing
  from pandas_ml.compat import plotting
  from pandas.util.testing import assert_produces_warning, close, RNGContext, assert_index_equal, assert_series_equal, assert_frame_equal, assert_numpy_array_equal
label_desc: Use image node_id 1 for calling the PlottingTestCase obj's underlying member method code with example usage: obj.teardown_method() without return types