How to unselect/clear selection of selected item in selectOneListBox?

Question

I have a page with a selectOneListBox, and I can't find a way to unselect the selected item. When a downstream page navigates back, the list box always shows with the previously selected value. I've tried tweaking the selectOneListBox value attribute to null when it is not a post back, a la:
<af:selectOneListbox
    value="#{adfFacesContext.postback ? bindings.APLEntityTypedescription.inputValue : null}"Which didn't work, the list was completely empty. I also tried setting the value to null in the backing bean binding for the component:
    public void setFromType(CoreSelectOneListbox fromType) {
        this.fromType = fromType;
        if (!ADFUtils.isPostback()) {
            fromType.setValue(null);
    }And similarly for the getter:
    public CoreSelectOneListbox getFromType() {
        if (fromType != null && !ADFUtils.isPostback()) {
            fromType.setValue(null);
        return fromType;
    }None of this works, every time the page loads from a "back" navigation, the list box still shows the prior selection. But if I navigate to a completely different page and then come back, it is no longer selected.
So either I need some way to reset the selectOneListBox to have nothing selected, or completely clear the page assuming this is what happens when I navigate to an unrelated page and then come back. FWIW, the downstream page navigates back with a static navigation rule in faces-config.xml so I'm not sure why/how it remembers the prior selection state.
Any help/insight is appreciated, Clark

Answer 1

And this is how you do it in ADF (on the backing bean's getter for the selectOneListbox):
    public CoreSelectOneListbox getFromType() {
        if (!ADFUtils.isPostback()) {
            JSFUtils.setExpressionValue("#{bindings.APLEntityTypedescription.inputValue}", null);    
        return fromType;
    }Where the binding string matches that of the selectOneListbox's value attribute:
              <af:selectOneListbox value="#{bindings.APLEntityTypedescription.inputValue}"
                                   ... >