code: def test_reduce_to_2d(self):
      def make_range_array(dim):
          """Produce an incrementally increasing multidimensional array.
  
          Args:
            dim: the number of dimensions for the array
  
          Returns:
            An array of increasing integer elements, with dim dimensions and size
            two in each dimension.
  
          Example: rangeArray(2) results in [[0,1],[2,3]].
          """
          return np.array(range(2**dim)).reshape([2] * dim)
  
      for i in range(2, 5):
          actual = text_plugin.reduce_to_2d(make_range_array(i))
          expected = make_range_array(2)
          np.testing.assert_array_equal(actual, expected)
  
imports: import collections.abc
  import os
  import textwrap
  import numpy
  import tensorflow
  from tensorboard import plugin_util
  from tensorboard import context
  from tensorboard.backend.event_processing import data_provider
  from tensorboard.backend.event_processing import plugin_event_multiplexer
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.text import text_plugin
  from tensorboard.util import test_util
label_desc: Use image node_id 9 for calling the TextPluginTest obj's underlying member method code with example usage: obj.test_reduce_to_2d() and returns: np