}
}
private static class BodyAtomFilter extends UsableFilter {
public void visit(BuiltInAtom atom) {
BuiltIn builtin = BuiltInRegistry.instance.getBuiltIn( atom.getPredicate() );
if( builtin.equals( NoSuchBuiltIn.instance ) ) {
notUsableMessage = "No builtin for " + atom.getPredicate();
}
}