class_docstr: Base class used to display multiple child widgets.
class_docstr_tok: ["Base","class","used","to","display","multiple","child","widgets","."]
docstr: Sets the title of a container page.
  
  Parameters
  ----------
  index : int
      Index of the container page
  title : unicode
      New title
docstr_tok: ["Sets","the","title","of","a","container","page",".","Parameters","--","--","--","--","--","index",":","int","Index","of","the","container","page","title",":","unicode","New","title"]
code: def set_title(self, index, title):
      """Sets the title of a container page.
  
      Parameters
      ----------
      index : int
          Index of the container page
      title : unicode
          New title
      """
      # JSON dictionaries have string keys, so we convert index to a string
      index = unicode_type(int(index))
      self._titles[index] = title
      self.send_state("_titles")
  
file_path: catboost/contrib/python/ipywidgets/py2/ipywidgets/widgets/widget_selectioncontainer.py
imports: from .widget_box import Box
  from .widget import register
  from .widget_core import CoreWidget
  from traitlets import Unicode, Dict, CInt, TraitError, validate
  from ipython_genutils.py3compat import unicode_type
label_desc: Use image node_id 2 for calling the _SelectionContainer obj's underlying member method code with example usage: obj.set_title(index, title) without return types