return Null.INSTANCE;
}
// evaluate the first arg
ArgumentIterator argIt = new ArgumentIterator(context, rho, arguments);
PairList.Node firstArgNode = argIt.nextNode();
SEXP firstArg = context.evaluate( firstArgNode.getValue(), rho);
if(firstArg.isObject()) {
SEXP result = S3.tryDispatchFromPrimitive(context, rho, call, "rep", firstArg, arguments);
if(result != null) {
return result;