class_docstr: Tests for replacements of deprecated tf.nest symbols.
class_docstr_tok: ["Tests","for","replacements","of","deprecated","tf.nest","symbols","."]
code: def test_flatten_with_joined_string_paths(self, inputs, expected):
      self.assertEqual(
          py_utils.flatten_with_joined_string_paths(
              inputs, separator="/"
          ),
          expected,
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import collections
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.utils import py_utils
label_desc: Use image node_id 1 for calling the NestReplacementTests obj's underlying member method code with example usage: obj.test_flatten_with_joined_string_paths(inputs, expected) without return types