title: In the Wicket DropDownChoice how can you replace "Choose one" to another text
body: <p>I have a DropDownChoice like below:</p>
  
  <pre><code>    final DropDownChoice&lt;Term&gt; terms = new DropDownChoice("terms", new Model&lt;Term&gt;(), new Model(new ArrayList(termDao.findAll())), new IChoiceRenderer&lt;Term&gt;() {
          public Object getDisplayValue(Term object) {
              return object.getIdentifier();
          }
  
          public String getIdValue(Term object, int index) {
              return object.getId().toString();
          }
      });
  </code></pre>
  
  <p>I want to have "Choose All" instead of "Choose one". How can I do that?</p>