Extending RolePermissionsAdapter

[dorr67]

In trying to extend the RolePermissionsAdapter, I'm getting the following error:
java.lang.NoSuchMethodException: net.sf.navigator.menu.RolesPermissionsAdapter.<init>()

Here's my applicationContext.xml:
<bean id="rolesPermissionsAdapter" class="net.sf.navigator.menu.RolesPermissionsAdapter">
<property name="menuRolesAdapter"><ref local="menuRolesAdapter"/></property>
</bean>

<bean id="menuRolesAdapter" class="com.tsi.navigation.MenuRolesAdapter"/>

My java class, MenuRolesAdapter, extends RolesPermissionAdapter.

Any help would be greatly appreciated.