code: def setUpClass(cls):
      # For efficient testing, set the disk usage bytes limit to a small
      # number (10).
      os.environ["TFDBG_DISK_BYTES_LIMIT"] = "10"
  
file_path: tensorflow-upstream/tensorflow/python/debug/wrappers/disk_usage_test.py
imports: import os
  import tempfile
  from tensorflow.python.client import session
  from tensorflow.python.debug.wrappers import dumping_wrapper
  from tensorflow.python.debug.wrappers import hooks
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import state_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import googletest
  from tensorflow.python.training import monitored_session
label_desc: Use image node_id 1 for calling the DumpingDebugWrapperDiskUsageLimitTest obj's underlying member method code with example usage: obj.setUpClass(cls) without return types