principalproviders = (ComponentSelector)this.manager.lookup(PrincipalProvider.ROLE+"Selector");
principalprovider = (PrincipalProvider)principalproviders.select(principal_provider);
Principal caller = new Principal(caller_principal_name, caller_principal_password);
PrincipalGroup principalgroup = new PrincipalGroup(principal_group_name);
Principal principal = new Principal(principal_name);
principalprovider.removeMember(caller, principalgroup, principal);
} catch (ComponentException ce) {