code: def tearDown(self):
      tf.keras.backend.clear_session()
      self.sess.close()
      super(SvdfConvLayerTest, self).tearDown()
  
file_path: model_search/model_search/ops/svdf_conv_test.py
imports: from absl import logging
  from model_search.ops import svdf_conv
  import numpy
  from six.moves import range
  import tensorflow.compat.v1
label_desc: Use image node_id 2 for calling the SvdfConvLayerTest obj's underlying member method code with example usage: obj.tearDown() without return types