private void tryExpunge() throws MessagingException {
  try {
    inboxFolder.expunge();
  } catch (MethodNotSupportedException mnse) {
    getMonitor()
        .debug(
            "Expunge method not supported (e.g. POP3) - closing and reopening folder - {}",
            mnse.getMessage());

    inboxFolder.close(true);
    reopenConnection();
  }
}
 

@Override
   public boolean delete(boolean recurse) throws MessagingException {  
// Not applicable on DefaultFolder
throw new MethodNotSupportedException("Cannot delete Default Folder");
   }
 

@Override
   public boolean renameTo(Folder f) throws MessagingException {
// Not applicable on DefaultFolder
throw new MethodNotSupportedException("Cannot rename Default Folder");
   }
 

@Override
   public void appendMessages(Message[] msgs) throws MessagingException {
// Not applicable on DefaultFolder
throw new MethodNotSupportedException("Cannot append to Default Folder");
   }
 

@Override
   public Message[] expunge() throws MessagingException {
// Not applicable on DefaultFolder
throw new MethodNotSupportedException("Cannot expunge Default Folder");
   }
 

public static <I,R,P> R invokeLocal(I i,Method method,P param) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException, ClassNotFoundException, MethodNotSupportedException{
	if(param==null){
		return (R)method.invoke(i);
	}
	return (R)method.invoke(i,param);
}
 

public static <I,R,P> R invokeLocal(I i,Method method,P param) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException, ClassNotFoundException, MethodNotSupportedException{
	if(param==null){
		return (R)method.invoke(i);
	}
	return (R)method.invoke(i,param);
}
 

@Override
public InputStream listCommand() throws MessagingException, IOException {
    throw new MethodNotSupportedException();
}