host-secondary.xml missing example to specify password for connection to primary

    <domain-controller>
        <remote authentication-context="primary">
            <discovery-options>
                <static-discovery name="primary" protocol="${jboss.domain.primary.protocol:remote+http}" host="${jboss.domain.primary.address:127.0.0.2}" port="${jboss.domain.primary.port:9990}"/>
            </discovery-options>
        </remote>
    </domain-controller>

            <authentication-client>
                <authentication-configuration name="primary" authentication-name="secondary">
                    <credential-reference clear-text="password1!"/>
                </authentication-configuration>
                <authentication-context name="primary">
                    <match-rule authentication-configuration="primary"/>
                </authentication-context>
            </authentication-client>