class_docstr: Singleton object containing the current figure templates (aka themes)
class_docstr_tok: ["Singleton","object","containing","the","current","figure","templates","(","aka","themes",")"]
code: def __contains__(self, item):
      return item in self._templates
  
imports: import textwrap
  import pkgutil
  import copy
  import os
  import json
  from functools import reduce
label_desc: Use image node_id 3 for calling the TemplatesConfig obj's underlying member method code with example usage: obj.__contains__(item) and returns: unknown