  from rest_framework.request import clone_request
  from rest_framework.utils import dict2xml
  from rest_framework.utils import encoders
  from rest_framework.utils.breadcrumbs import get_breadcrumbs
  from rest_framework.utils.mediatypes import get_media_type_params, add_media_type_param
  from rest_framework import VERSION
  from rest_framework import serializers
  
  
  class BaseRenderer(object):
 
</s> remove     def render(self, obj=None, media_type=None):
        return RENDERER_B_SERIALIZER(obj)
 </s> add     def render(self, data, media_type=None, renderer_context=None):
        return RENDERER_B_SERIALIZER(data) </s> remove     def render(self, obj=None, media_type=None):
        return RENDERER_B_SERIALIZER(obj)
 </s> add     def render(self, data, media_type=None, renderer_context=None):
        return RENDERER_B_SERIALIZER(data) </s> remove     def render(self, obj=None, media_type=None):
        return RENDERER_A_SERIALIZER(obj)
 </s> add     def render(self, data, media_type=None, renderer_context=None):
        return RENDERER_A_SERIALIZER(data) </s> remove     def render(self, obj=None, media_type=None):
        return RENDERER_A_SERIALIZER(obj)
 </s> add     def render(self, data, media_type=None, renderer_context=None):
        return RENDERER_A_SERIALIZER(data) </s> remove     def __init__(self, view=None):
        self.view = view

    def render(self, data=None, accepted_media_type=None):
 </s> add     def render(self, data, accepted_media_type=None, renderer_context=None):
from rest_framework.utils.mediatypes import get_media_type_params
  from rest_framework.request import clone_request
  from rest_framework.utils import dict2xml
  from rest_framework.utils import encoders
  from rest_framework.utils.breadcrumbs import get_breadcrumbs
from rest_framework.utils.mediatypes import get_media_type_params
  from rest_framework import VERSION
  from rest_framework import serializers
  
  
  class BaseRenderer(object):
keep keep keep keep replace keep keep keep keep keep
 Make sure JSON output in Browseable API is nicely indented 
rest_framework/renderers.py