docstr: Book instance of class xlsxwriter.Workbook.
  
  This attribute can be used to access engine-specific features.
docstr_tok: ["Book","instance","of","class","xlsxwriter.Workbook",".","This","attribute","can","be","used","to","access","engine-specific","features","."]
code: def book(self):
      """
      Book instance of class xlsxwriter.Workbook.
  
      This attribute can be used to access engine-specific features.
      """
      return self._book
  
file_path: catboost/contrib/python/pandas/py3/pandas/io/excel/_xlsxwriter.py
imports: from __future__ import annotations
  from typing import Any
  from pandas._libs import json
  from pandas._typing import FilePath, StorageOptions, WriteExcelBuffer
  from pandas.io.excel._base import ExcelWriter
  from pandas.io.excel._util import combine_kwargs, validate_freeze_panes
label_desc: Use image node_id 2 for calling the XlsxWriter obj's underlying member method code with example usage: obj.book() and returns: self