docstr: Asserts that indices values are integers.
docstr_tok: ["Asserts","that","indices","values","are","integers","."]
code: def _assert_is_integer(self, indices):
      """Asserts that indices values are integers."""
      assert indices.dtype == np.int32
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import itertools
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.stages.research import misc
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.testing import test_utils
label_desc: Use image node_id 5 for calling the SplitBySmallValueEncodingStageTest obj's underlying member method code with example usage: obj._assert_is_integer(indices) without return types