title: ClassMapper warnings after upgrading Firebase
body: <p>After upgrading to Firebase 3, I started recieving the following errors when serializing java.util.date:</p>
  <blockquote>
  <p>W/ClassMapper: No setter/field for day found on class java.util.Date (fields/setters are case sensitive!)</p>
  <p>W/ClassMapper: No setter/field for timezoneOffset found on class java.util.Date (fields/setters are case sensitive!)</p>
  </blockquote>
  <p>Will they affect anything?</p>
  <p>How can I avoid those warnings?</p>