You are only likely to use this method for debugging. It allows
you to save out the raw data as uploaded by the browser. You can
then recreate the upload at a later date complete with all files
and form contents intact. For details of how to load up a saved
dump file see the Recreating Uploads section of this document.
Whether the path is treated as a virtual path or an absolute
path is determined by the standard ABCUpload path
Whether other files are automatically overwritten is determined
by the Overwrite property.