def resources_to_link(self, resources):
return {}<EOL>
Returns a dictionary of resources which will need to be modified when this is turned into CloudFormation.
        The result of this will be passed to :func: `to_cloudformation`.

        :param dict resources: resources which potentially need to be modified along with this one.
        :returns: a dictionary of Resources to modify. This will be passed to :func: `to_cloudformation`.