title: How to clear / reset an ItemizedOverlay in Android?
body: <p>I have a program that is creating an ItemizedOverlay and a map. Everything works fine upon startup. </p>
  
  <p>When you close ande re-open the app, I am using onRestart() to get updated information from my server and update the map. The problem is that at this point, the ItemizedOverlay still contains the old items, and then proceeds to add the new data to the existing data. </p>
  
  <p>I am looking for a way to clear out the ItemizedOverlay. There does not appear to be an ItemizedOveraly.clear, or any similar function. </p>
  
  <p>Ideas about how I can do this / why is it not obvious ?</p>