Response to AttributeQuery is not signed

[Roman CHRENKO]

Hello.
I configured IDP (3.2.1) as an Attribute Authority. It works as expected but responses from it are not signed.
Can you, please, suggest me, how to configure IDP to sign responses to AttributeQuery?

My configuration in relying-party.xml is:
        <bean parent="RelyingPartyByName" c:relyingPartyIds="http://fedora22.rch.org/shibbolethSP">
            <property name="profileConfigurations">
                <list>
                    <bean parent="SAML2.SSO" p:encryptAssertions="false" p:signResponses="true" p:skipEndpointValidationWhenSigned="true" />
                    <ref bean="SAML1.AttributeQuery" />
                    <ref bean="SAML1.ArtifactResolution" />
                    <ref bean="SAML2.ECP" />
                    <ref bean="SAML2.Logout" />
                    <ref bean="SAML2.AttributeQuery" />
                    <ref bean="SAML2.ArtifactResolution" />
                    <ref bean="Liberty.SSOS" />
                </list>
            </property>
        </bean>


Roman