code: def _getDefaultFlags(self):
      flags = {
          "data_url": "",
          "data_dir": self._prepareDummyTrainingData(),
          "wanted_words": "a,b,c",
          "sample_rate": 16000,
          "clip_duration_ms": 1000,
          "window_size_ms": 30,
          "window_stride_ms": 20,
          "feature_bin_count": 40,
          "preprocess": "mfcc",
          "silence_percentage": 25,
          "unknown_percentage": 25,
          "validation_percentage": 10,
          "testing_percentage": 10,
          "summaries_dir": os.path.join(
              self.get_temp_dir(), "summaries"
          ),
          "train_dir": os.path.join(self.get_temp_dir(), "train"),
          "time_shift_ms": 100,
          "how_many_training_steps": "2",
          "learning_rate": "0.01",
          "quantize": False,
          "model_architecture": "conv",
          "check_nans": False,
          "start_checkpoint": "",
          "batch_size": 1,
          "background_volume": 0.25,
          "background_frequency": 0.8,
          "eval_step_interval": 1,
          "save_step_interval": 1,
          "verbosity": tf.compat.v1.logging.INFO,
          "optimizer": "gradient_descent",
      }
      return DictStruct(**flags)
  
file_path: tensorflow-upstream/tensorflow/examples/speech_commands/train_test.py
imports: import os
  import unittest
  import tensorflow
  from tensorflow.examples.speech_commands import train
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import test
label_desc: Use image node_id 5 for calling the TrainTest obj's underlying member method code with example usage: obj._getDefaultFlags() and returns: DictStruct