Secure Rest service with LDAP reuslt in ClassNotFoundException for org.eclipse.jetty.security.MappedLoginService.RolePrincipal

Issue

I have an use case where a bundle class loader tried to load a public inner static class but got ClassNotFoundException:
java.lang.ClassNotFoundException: org.eclipse.jetty.security.MappedLoginService.RolePrincipal not found by myservice-bundle [266]

All the package wiring were fine as the package "org.eclipse.jetty.security" was exported by the jetty server bundle and my service-bundle had dynamic import package switched on.

The class RolePrincipal in question is a public inner static class defined in the org.eclipse.jetty.security.MappedLoginService class.

Here was what I have tried to configure in my blueprint.xml file:

<bean id="myLoginService" class="org.eclipse.jetty.plus.jaas.JAASLoginService">
    <property name="name" value=“xxxxx"/>
    <property name="loginModuleName" value=“myLdapLoginModule"/>
    <property name="roleClassNames">
        <list>
            <value>org.eclipse.jetty.security.MappedLoginService.RolePrincipal</value>
        </list>
    </property>
</bean>