docstr: Display as HTML in IPython notebook.
docstr_tok: ["Display","as","HTML","in","IPython","notebook","."]
code: def _repr_html_(self):
      """Display as HTML in IPython notebook."""
      return self.as_html()
  
imports: from statsmodels.compat.pandas import FUTURE_STACK
  from statsmodels.compat.python import lzip
  import datetime
  from functools import reduce
  import re
  import textwrap
  import numpy
  import pandas
  from .table import SimpleTable
  from .tableformatting import fmt_latex, fmt_txt
label_desc: Use image node_id 4 for calling the Summary obj's underlying member method code with example usage: obj._repr_html_() and returns: self