def METHOD_NAME(self) -> str:
    association_id = self._get_param("AssociationId")
    iam_instance_profile_name = self._get_param("IamInstanceProfile.Name")
    iam_instance_profile_arn = self._get_param("IamInstanceProfile.Arn")
    iam_association = self.ec2_backend.METHOD_NAME(
        association_id, iam_instance_profile_name, iam_instance_profile_arn
    )
    template = self.response_template(IAM_INSTANCE_PROFILE_RESPONSE)
    return template.render(iam_association=iam_association, state="associating")