def generate_policy_statements(self):
        """Should be overridden on a subclass to create policy statements.

        By subclassing this blueprint, and overriding this method to generate
        a list of :class:`awacs.aws.Statement` types, a
        :class:`troposphere.iam.PolicyType` will be created and attached to
        the roles specified here.

        If not specified, no Policy will be created.
        """

        return []