code: def testRelPath(self):
      train_dir = "train"
      model = os.path.join(train_dir, "model-0")
      # model_checkpoint_path should have no "train" directory part.
      new_rel_path = "model-0"
      ckpt = checkpoint_management.generate_checkpoint_state_proto(
          train_dir, model
      )
      self.assertEqual(ckpt.model_checkpoint_path, new_rel_path)
      self.assertEqual(len(ckpt.all_model_checkpoint_paths), 1)
      self.assertEqual(
          ckpt.all_model_checkpoint_paths[-1], new_rel_path
      )
  
imports: import contextlib
  import os
  import pathlib
  import shutil
  import tempfile
  from google.protobuf import text_format
  from tensorflow.core.protobuf import saver_pb2
  from tensorflow.python.checkpoint import checkpoint
  from tensorflow.python.checkpoint import checkpoint_management
  from tensorflow.python.eager import context
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.training import saver
  from tensorflow.python.training.checkpoint_state_pb2 import CheckpointState
label_desc: Use image node_id 3 for calling the CheckpointStateTest obj's underlying member method code with example usage: obj.testRelPath() without return types