Converts the specified URI to an absolute URI, if uri is related and the current execution is not included ( {@link #isIncluded}).
Note: an asynchrous update is processed by the update servlet. It is different from the servlet for rendering the ZUML page. In other words, a relative URI won't be interpreted correctly, so you have to invoke this method to convert them if necessary.
In addtions, RequestDispatcher.include doesn't handle related URI well.
@param skipInclude whether not to convert to an absolute URI ifthe current page is included by another page. If you are not sure, you might specify false.