hidden.setLabel("Hidden");
hidden.setValue("You can not see this.");
if (help)
hidden.setHelp("This is hidden help?");
if (error)
hidden.addError("This a hidden error - I have no idea what this means?");
// Checkbox field
CheckBox checkBox = list.addItem().addCheckBox("fruit");
if (help)
checkBox.setHelp("Select all the fruits that you like to eat");