code: def test_build(self):
      this_directory = os.path.abspath(os.path.dirname(__file__))
      build_cost_predictor(
          file_name=os.path.join(
              this_directory, "saved_models", "summary_train.txt"
          ),
          output_file="saved_models/bps_train.joblib",
          save_to_local=False,
      )
      build_cost_predictor(
          file_name=os.path.join(
              this_directory, "saved_models", "summary_prediction.txt"
          ),
          output_file="saved_models/bps_prediction.joblib",
          save_to_local=False,
      )
  
file_path: SUOD/suod/test/test_cost_predictor.py
imports: import os
  import sys
  import unittest
  from suod.models.cost_predictor import build_cost_predictor
label_desc: Use image node_id 2 for calling the TestCostPredictor obj's underlying member method code with example usage: obj.test_build() without return types