code: def _getEvalExportDir(self):
      return os.path.join(self._getTempDir(), "eval_export_dir")
  
file_path: model-analysis/tensorflow_model_analysis/evaluators/legacy_aggregate_test.py
imports: import os
  import apache_beam
  from apache_beam.testing import util
  import tensorflow
  from tensorflow_model_analysis import constants
  from tensorflow_model_analysis.eval_saved_model import testutil
  from tensorflow_model_analysis.eval_saved_model.example_trainers import linear_classifier
  from tensorflow_model_analysis.evaluators import legacy_aggregate
  from tensorflow_model_analysis.evaluators import legacy_poisson_bootstrap
label_desc: Use image node_id 1 for calling the AggregateTest obj's underlying member method code with example usage: obj._getEvalExportDir() and returns: os