Currently, if style is defined as a kwarg on a mongoengine field, utils.get_field_kwargs() method does not build the DRF serializer field with it. To achieve this one has to wrap serializers.build_field() and update the field_kwargs dictionary, which seems unnecessary?

Is this intended behaviour?

The style argument is listed as a DRF 'core argument' on the base serializer field:
https://www.django-rest-framework.org/api-guide/fields/#core-arguments