public Combobox<V> withId(final String id) { setId(id); return this; }
public Combobox<V> withInitialValue(final V value) { setInitialValue(value); return this; }
public Combobox<V> withRequired(final boolean required) { setRequired(required); return this; }
public Combobox<V> mandatory() { return withRequired(MANDATORY); }
public Combobox<V> witLabel(final String label) { setLabel(label); return this; }
public Combobox<V> witHelpText(final String helpText) { setHelpText(helpText); return this; }
public Combobox<V> withRegexValidation(final String regex) { setRegexValidation(regex); return this; }
public Combobox<V> optional() { return withRequired(OPTIONAL); }