      The resource to use when validating requests and filtering responses,
      or `None` to use default behaviour.
      """
  
      renderers = renderers.DEFAULT_RENDERERS
      """
      List of renderers the resource can serialize the response with, ordered by preference.
      """
  
      parsers = parsers.DEFAULT_PARSERS
 
</s> remove The :mod:`response` module provides Response classes you can use in your
views to return a certain HTTP response. Typically a response is *rendered*
into a HTTP response depending on what renderers are set on your view and
als depending on the accept header of the request.
 </s> add The :mod:`response` module provides :class:`Response` and :class:`ImmediateResponse` classes.

`Response` is a subclass of `HttpResponse`, and can be similarly instantiated and returned
from any view. It is a bit smarter than Django's `HttpResponse` though, for it knows how
to use :mod:`renderers` to automatically render its content to a serial format.
This is achieved by :

    - determining the accepted types by checking for an overload or an `Accept` header in the request
    - looking for a suitable renderer and using it on the content given at instantiation


`ImmediateResponse` is an exception that inherits from `Response`. It can be used
to abort the request handling (i.e. ``View.get``, ``View.put``, ...), 
and immediately returning a response. </s> remove         Should be a tuple/list of classes as described in the :mod:`renderers` module.
 </s> add         `renderers` is a list/tuple of renderer instances and represents the set of renderers
        that the response can handle. </s> remove     :exc:`response.ErrorResponse` with status code 400. If set to true, only
 </s> add     :exc:`response.ImmediateResponse` with status code 400. If set to true, only </s> remove         content is the raw content.

        The set of renderers that the response can handle.
 </s> add         `content` is the raw content, not yet serialized. This must be simple Python
        data that renderers can handle (cf: dict, str, ...) </s> remove         PRenderer = self.get_renderer_mock('application/pickle')
 </s> add         prenderer = self.get_renderer_mock('application/pickle')
    renderer_classes = renderers.DEFAULT_RENDERERS
      The resource to use when validating requests and filtering responses,
      or `None` to use default behaviour.
      """
  
    renderer_classes = renderers.DEFAULT_RENDERERS
      """
      List of renderers the resource can serialize the response with, ordered by preference.
      """
  
      parsers = parsers.DEFAULT_PARSERS
keep keep keep keep replace keep keep keep keep keep
 cleaned a bit Response/ResponseMixin code, added some documentation + renamed ErrorResponse to ImmediateResponse 
djangorestframework/views.py