          all_kw_args = dict(content.items() + tmp.items())
  
          return all_kw_args
  
  
  class ReadModelMixin(ModelMixin):
      """
      Behavior to read a `model` instance on GET requests
 
</s> remove             self.model_instance = model.objects.get(self.build_query(*args, **kwargs))
 </s> add             self.model_instance = self.get_object(*args, **kwargs) </s> remove             instance = model.objects.get(self.build_query(*args, **kwargs))
 </s> add             instance = self.get_object(*args, **kwargs) </s> remove             self.model_instance = model.objects.get(self.build_query(*args, **kwargs))
 </s> add             self.model_instance = self.get_object(*args, **kwargs) </s> remove from djangorestframework.response import Response
 </s> add from djangorestframework.response import Response, ErrorResponse </s> remove from djangorestframework.mixins import CreateModelMixin, PaginatorMixin
 </s> add from djangorestframework.mixins import CreateModelMixin, PaginatorMixin, ReadModelMixin
    def get_object(self, *args, **kwargs):
        """
        Get the instance object for read/update/delete requests.
        """
        model = self.resource.model
        return model.objects.get(self.build_query(*args, **kwargs))

          all_kw_args = dict(content.items() + tmp.items())
  
          return all_kw_args
  
    def get_object(self, *args, **kwargs):
        """
        Get the instance object for read/update/delete requests.
        """
        model = self.resource.model
        return model.objects.get(self.build_query(*args, **kwargs))

  
  class ReadModelMixin(ModelMixin):
      """
      Behavior to read a `model` instance on GET requests
keep keep keep add keep keep keep keep
 Add a get_object method to the ModelMixin, and tests 
djangorestframework/mixins.py