title: DateTimeFormatter.parseLocalDate throws UnsupportedOperationException
body: <p>The API for <a href="http://joda-time.sourceforge.net/apidocs/org/joda/time/format/DateTimeFormatter.html#parseLocalDate%28java.lang.String%29" rel="noreferrer">parseLocalDate </a> says it will throw <code>UnsupportedOperationException</code> "if parsing is not supported". What does it mean by 'if parsing is not supported'? I'm looking through the source and can not find anywhere that throws <code>UnsupportedOperationException</code>. Has anyone ever been in a scenario where this exception was thrown from calling <code>parseLocalDate</code>?</p>