code: def _op_count_in_mil_program(mlmodel, op_type):
      prog = mlmodel._mil_program
      return len(prog.find_ops(op_type=op_type))
  
imports: import os
  import tempfile
  import numpy
  import pytest
  import coremltools.models.utils
  from coremltools._deps import _HAS_TF_2
  from coremltools.converters.mil.testing_reqs import ct
  from coremltools.converters.mil.testing_utils import compare_backend, ct_convert, validate_minimum_deployment_target
  from tensorflow.python.framework import dtypes
  from tensorflow.python.keras.saving import saving_utils
  from tensorflow.python.tools.freeze_graph import freeze_graph
label_desc: Use image node_id 3 for calling the TensorFlowBaseTest obj's underlying member method code with example usage: obj._op_count_in_mil_program(mlmodel, op_type) and returns: len