code: def _getEvalExportDir(self):
      return os.path.join(self._getTempDir(), "eval_export_dir")
  
file_path: model-analysis/tensorflow_model_analysis/api/tfma_unit_test.py
imports: import os
  import apache_beam
  import tensorflow
  from tensorflow_model_analysis.api import tfma_unit
  from tensorflow_model_analysis.eval_saved_model.example_trainers import fixed_prediction_estimator
  from tensorflow_model_analysis.eval_saved_model.example_trainers import fixed_prediction_estimator_extra_fields
  from tensorflow_model_analysis.post_export_metrics import metric_keys
  from tensorflow_model_analysis.post_export_metrics import post_export_metrics
  from tensorflow_model_analysis.slicer import slicer_lib
label_desc: Use image node_id 1 for calling the TFMAUnitTest obj's underlying member method code with example usage: obj._getEvalExportDir() and returns: os