return null; // No user, so no ACLs.
}
List allAcls = holder.getEffectiveAccessControls();
AclEntry[] acls = new AclEntry[allAcls.size()];
acls = (AclEntry[]) allAcls.toArray( acls );
GrantedAuthorityEffectiveAclsResolver resolver = new GrantedAuthorityEffectiveAclsResolver();
AclEntry[] resolvedAcls = resolver.resolveEffectiveAcls( acls, auth );
return resolvedAcls;
}