class_docstr: Combines an object with a dictionary of defaults.
  
  Used internally by AsyncHTTPClient implementations.
class_docstr_tok: ["Combines","an","object","with","a","dictionary","of","defaults",".","Used","internally","by","AsyncHTTPClient","implementations","."]
code: def __init__(self, request, defaults):
      self.request = request
      self.defaults = defaults
  
imports: from __future__ import absolute_import, division, print_function
  import functools
  import time
  import weakref
  from tornado.concurrent import TracebackFuture
  from tornado.escape import utf8, native_str
  from tornado import httputil, stack_context
  from tornado.ioloop import IOLoop
  from tornado.util import Configurable
label_desc: Use image node_id 1 to create a new _RequestProxy object from inherited base classes: object with example: obj = _RequestProxy(request, defaults)