code: def test_df_stability_report_expanding():
      # generate report directly from dataframe
      features = ["date:isActive", "date:eyeColor"]
      df_stability_report(
          pytest.test_df,
          time_axis="date",
          reference_type="expanding",
          features=features,
      )
  
file_path: popmon/tests/popmon/pipeline/test_report.py
imports: import pandas
  import pytest
  from popmon import resources
  from popmon.base import Pipeline
  from popmon.config import Settings
  from popmon.hist.filling import get_bin_specs
  from popmon.io import JsonReader
  from popmon.pipeline.report import df_stability_report, stability_report
label_desc: Use image node_id 6 for calling a global function with example usage: test_df_stability_report_expanding() without return types