class_docstr: Unit test class for an already trained Kmeans model.
docstr: Check the model list fields method.
code: def test__list_fields(self):
      """
      Check the model list fields method.
      """
      correct_fields = [
          "batch_size",
          "row_label_name",
          "cluster_id",
          "cluster_info",
          "features",
          "max_iterations",
          "method",
          "num_clusters",
          "num_examples",
          "num_features",
          "num_unpacked_features",
          "training_iterations",
          "training_time",
          "unpacked_features",
      ]
  
      self.assertItemsEqual(self.model._list_fields(), correct_fields)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import copy
  import numpy
  from numpy.testing import assert_allclose
  import turicreate
  from .None import util
  from turicreate.util import _assert_sframe_equal
  from turicreate.toolkits._main import ToolkitError
  import sys
label_desc: Use image node_id 2 for calling the KmeansModelTest obj's underlying member method code with example usage: obj.test__list_fields() without return types