public SamlIdentityProviderConfigBuilder sloResEndpoint(SamlEndpoint sloResEndpoint) {
        this.sloResEndpoint = requireNonNull(sloResEndpoint, "sloResEndpoint");
        return this;
    }
Sets a single logout response endpoint of an identity provider.
saml/src/main/java/com/linecorp/armeria/server/saml/SamlIdentityProviderConfigBuilder.java