protected void prepareSamlOutboundDestinationHandler(final MessageContext outboundContext) throws Exception {
        val handlerDest = new SAMLOutboundDestinationHandler();
        handlerDest.initialize();
        handlerDest.invoke(outboundContext);
    }
Prepare saml outbound destination handler.

@param outboundContext the outbound context
@throws Exception the exception
support/cas-server-support-saml-idp-web/src/main/java/org/apereo/cas/support/saml/web/idp/profile/builders/enc/DefaultSamlIdPObjectSigner.java