@Override
public Result attempt(
final List<AvailObject> args, final Interpreter interpreter, final boolean skipReturnCheck) {
assert args.size() == 2;
final A_Atom propertyKey = args.get(0);
final A_Atom atom = args.get(1);
if (atom.isAtomSpecial()) {
return interpreter.primitiveFailure(E_SPECIAL_ATOM);
}
final A_BasicObject propertyValue = atom.getAtomProperty(propertyKey);
return interpreter.primitiveSuccess(
AtomDescriptor.objectFromBoolean(!propertyValue.equalsNil()));
}
