code: def testGetMfccFeaturesRange(self):
      model_settings = {
          "preprocess": "mfcc",
      }
      features_min, features_max = input_data.get_features_range(
          model_settings
      )
      self.assertLess(features_min, features_max)
  
imports: import os
  import numpy
  import tensorflow
  from tensorflow.examples.speech_commands import input_data
  from tensorflow.examples.speech_commands import models
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 22 for calling the InputDataTest obj's underlying member method code with example usage: obj.testGetMfccFeaturesRange() without return types