code: def _to_html(instance):
      try:
          # keep backward compatibility with old base class (Plot)
          return instance._repr_html_()
      except AttributeError:
          # new base class (AbstractPlot)
          instance.plot()
          return instance.to_html()
  
imports: from collections.abc import Mapping
  from uuid import uuid4
  import sqlite3
  import json
  import importlib
  import pandas
  from jinja2 import Template
  from sklearn_evaluation.table import Table
  from sklearn_evaluation.report.serialize import try_serialize_figures, figure2html
  from sklearn_evaluation.telemetry import SKLearnEvaluationLogger
  from sklearn_evaluation.nb.NotebookCollection import add_compare_tab, tabs_html_from_content, HTMLMapping
  from sklearn_evaluation import plot
label_desc: Use image node_id 6 for calling a global function with example usage: _to_html(instance) and returns: instance, instance