code: def test_loadConstantND_quantize_CPU_and_NE(self):
      self.test_loadConstantND_quantize(ComputeUnit.CPU_AND_NE)
  
imports: import itertools
  import unittest
  import numpy
  import pytest
  import coremltools
  import coremltools.models.datatypes
  from coremltools import ComputeUnit
  from coremltools.models import _QUANTIZATION_MODE_LINEAR_QUANTIZATION, neural_network
  from coremltools.models.neural_network import quantization_utils
  from coremltools.models.neural_network.quantization_utils import MatrixMultiplyLayerSelector, _quantize_spec_weights, activate_int8_int8_matrix_multiplications
label_desc: Use image node_id 4 for calling the TestQuantizeWeightsAPI obj's underlying member method code with example usage: obj.test_loadConstantND_quantize_CPU_and_NE() without return types