moto/scripts/template/lib/responses.py.j2

from __future__ import unicode_literals
from moto.core.responses import BaseResponse
from .models import {{ escaped_service }}_backends
import json


class {{ service_class }}Response(BaseResponse):
    SERVICE_NAME = '{{ service }}'
    @property
    def {{ escaped_service }}_backend(self):
        return {{ escaped_service }}_backends[self.region]

    # add methods from here


# add templates from here