  
  import collections
  from collections import OrderedDict
  
  from django.utils.encoding import force_text
  
  from rest_framework.compat import unicode_to_repr
 
</s> remove     BindingDict, BoundField, NestedBoundField, ReturnDict, ReturnList
 </s> add     BindingDict, BoundField, JSONBoundField, NestedBoundField, ReturnDict,
    ReturnList
import json
  
  import collections
import json
  from collections import OrderedDict
  
  from django.utils.encoding import force_text
  
  from rest_framework.compat import unicode_to_repr
keep add keep keep keep keep keep
 PoC Add JSONBoundField to serializers (Fixes #4999)

Per issue #4999, JSONFields are not rendered properly in the DRF
browsable API HTML forms.  This patch attempts to fix that behavior by
introducing a JSONBoundField helper similar to the NestedBoundField
helper. 
rest_framework/utils/serializer_helpers.py