old_contents: from rest_framework import serializers as ser
  from api.base.utils import absolute_reverse
  from api.base.serializers import JSONAPISerializer, RelationshipField, IDField, LinksField
  
  
  class IdentifierSerializer(JSONAPISerializer):
  
      category = ser.CharField(read_only=True)
  
      filterable_fields = frozenset(['category'])
  
      value = ser.CharField(read_only=True)
  
      referent = RelationshipField(
          related_view='registrations:registration-detail',
          related_view_kwargs={'node_id': '<referent._id>'},
      )
  
      id = IDField(source='_id', read_only=True)
  
      links = LinksField({'self': 'self_url'})
  
      class Meta:
          type_ = 'identifiers'
  
      def get_absolute_url(self, obj):
          return obj.absolute_api_v2_url
  
      def get_id(self, obj):
          return obj._id
  
      def get_detail_url(self, obj):
          import ipdb; ipdb.set_trace()
          return '{}/identifiers/{}'.format(obj.absolute_api_v2_url, obj._id)
  
      def self_url(self, obj):
          return absolute_reverse('identifiers:identifier-detail', kwargs={
              'identifier_id': obj._id,
          })
  
new_contents: from rest_framework import serializers as ser
  from api.base.utils import absolute_reverse
  from api.base.serializers import JSONAPISerializer, RelationshipField, IDField, LinksField
  
  
  class IdentifierSerializer(JSONAPISerializer):
  
      category = ser.CharField(read_only=True)
  
      filterable_fields = frozenset(['category'])
  
      value = ser.CharField(read_only=True)
  
      referent = RelationshipField(
          related_view='registrations:registration-detail',
          related_view_kwargs={'node_id': '<referent._id>'},
      )
  
      id = IDField(source='_id', read_only=True)
  
      links = LinksField({'self': 'self_url'})
  
      class Meta:
          type_ = 'identifiers'
  
      def get_absolute_url(self, obj):
          return obj.absolute_api_v2_url
  
      def get_id(self, obj):
          return obj._id
  
      def get_detail_url(self, obj):
          return '{}/identifiers/{}'.format(obj.absolute_api_v2_url, obj._id)
  
      def self_url(self, obj):
          return absolute_reverse('identifiers:identifier-detail', kwargs={
              'identifier_id': obj._id,
          })
  
subject: Remove rogue debugger how embarassing