code: def _get_input_names(spec):
      """
      Returns a list of the names of the inputs to this model.
      :param spec: The model protobuf specification
      :return: list of str A list of input feature names
      """
      retval = [feature.name for feature in spec.description.input]
      return retval
  
imports: from collections.abc import Iterable
  from functools import lru_cache
  import math
  import os
  import shutil
  import subprocess
  import sys
  import tempfile
  from typing import Optional, Union
  import warnings
  import numpy
  import coremltools
  from coremltools import ComputeUnit
  from coremltools.converters.mil.mil.passes.defs.preprocess import NameSanitizer
  from coremltools.proto import Model_pb2
  import coremltools.proto.MIL_pb2
  from .._deps import _HAS_SCIPY
label_desc: Use image node_id 28 for calling a global function with example usage: _get_input_names(spec) and returns: retval