Interface implemented by a page used for reporting exceptions.
Alternately, implemented by services to report request handling exceptions. This is invoked
before the exception report page is rendered. The default implementation converts the exception into a well formatted text file, with content similar to the default {@link org.apache.tapestry5.corelib.pages.ExceptionReport} page, and stores this file on the file system.
Exception report files are stored beneath a root directory, with intermediate folders for the day (e.g., "2014-06-02"), hour, and minute.
Directories are created as necessary; however, there is nothing in place to delete these exceptions reports.
@see org.apache.tapestry5.SymbolConstants#EXCEPTION_REPORTS_DIR
@see org.apache.tapestry5.services.RequestExceptionHandler