final List<ShippedVariable> vars = new ArrayList<ShippedVariable>(4);
if(thirdParam instanceof VarRef) {
final ShippedVariable shiped = wrapVariableToShip(request, (VarRef) thirdParam, contextSeq, dynEnv);
vars.add(shiped);
} else if(thirdParam instanceof SequenceExpression) {
final SequenceExpression seq = (SequenceExpression) thirdParam;
final List<XQExpression> exprs = seq.getExpressions();
for(XQExpression e : exprs) {
if(e instanceof VarRef) {
final ShippedVariable shiped = wrapVariableToShip(request, (VarRef) e, contextSeq, dynEnv);
vars.add(shiped);
}