title: Modification of duplicate items in list box
body: <p>Few duplicate items were added in Listbox how to rename the duplicate items with unique name?</p>
  
  <p>for example listbox is having items </p>
  
  <pre><code>Apple 
  Orange
  mango
  Apple
  Apple
  </code></pre>
  
  <p>How to rename the items name inside listbox so that output should be</p>
  
  <pre><code>Apple
  Orange
  mango
  Apple#1
  Apple#2
  </code></pre>