class_docstr: OSS Filesystem Tests
code: def tearDown(self):
      file_io.delete_recursively(self._base_dir)
  
imports: import os
  import unittest
  from tensorflow.python.framework import errors
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.platform import test
  from tensorflow.python.platform import gfile
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 4 for calling the OSSFSTest obj's underlying member method code with example usage: obj.tearDown() without return types