code: def close_or_save(self, fig):
      if pdf_output:
          self.pdf.savefig(fig)
  
file_path: statsmodels/statsmodels/sandbox/tests/test_predict_functional.py
imports: from statsmodels.sandbox.predict_functional import predict_functional
  import numpy
  import pandas
  import pytest
  import statsmodels.api
label_desc: Use image node_id 3 for calling the TestPredFunc obj's underlying member method code with example usage: obj.close_or_save(fig) without return types