class_docstr: A WSGI equivalent of `tornado.web.Application`.
  
  .. deprecated:: 4.0
  
     Use a regular `.Application` and wrap it in `WSGIAdapter` instead.
class_docstr_tok: ["A","WSGI","equivalent","of","`","tornado.web.Application","`",".","..","deprecated",":",":","4.0","Use","a","regular","`",".Application","`","and","wrap","it","in","`","WSGIAdapter","`","instead","."]
code: def __call__(self, environ, start_response):
      return WSGIAdapter(self)(environ, start_response)
  
imports: from __future__ import absolute_import, division, print_function
  import sys
  from io import BytesIO
  import tornado
  from tornado.concurrent import Future
  from tornado import escape
  from tornado import httputil
  from tornado.log import access_log
  from tornado import web
  from tornado.escape import native_str
  from tornado.util import unicode_type, PY3
label_desc: Use image node_id 1 for calling the WSGIApplication obj's underlying member method code with example usage: obj.__call__(environ, start_response) and returns: WSGIAdapter