  by serializing the output along with documentation regarding the Resource, output status and headers,
  and providing forms and links depending on the allowed methods, emitters and parsers on the Resource. 
  """
  from django.conf import settings
  from django.http import HttpResponse
  from django.template import RequestContext, loader
  from django import forms
  
  from djangorestframework.response import NoContent, ResponseException
  from djangorestframework.utils import dict2xml, url_resolves
 
</s> remove from djangorestframework.response import NoContent, ResponseException
 </s> add from djangorestframework.response import ErrorResponse </s> remove from djangorestframework.response import ResponseException
 </s> add from djangorestframework.response import ErrorResponse </s> remove from djangorestframework.emitters import EmitterMixin
from djangorestframework.response import Response, ResponseException
from djangorestframework.request import RequestMixin, AuthMixin
 </s> add from djangorestframework.response import Response, ErrorResponse
from djangorestframework.mixins import RequestMixin, ResponseMixin, AuthMixin </s> remove from djangorestframework.response import ResponseException
 </s> add from djangorestframework.response import ErrorResponse </s> remove from djangorestframework.response import Response, ResponseException
 </s> add from djangorestframework.response import Response, ErrorResponse
  by serializing the output along with documentation regarding the Resource, output status and headers,
  and providing forms and links depending on the allowed methods, emitters and parsers on the Resource. 
  """
  from django.conf import settings

  from django.template import RequestContext, loader
  from django import forms
  
  from djangorestframework.response import NoContent, ResponseException
  from djangorestframework.utils import dict2xml, url_resolves
keep keep keep keep replace keep keep keep keep keep
 Rename mixins into Mixin class, rename ResponseException to ErrorResponse, remove NoContent 
djangorestframework/emitters.py