from preamble:
"Change Set: UrlToText-fbs
Date: 2 February 2005
Author: Frank Shearar
Many moons past, Tim Rowledge pointed out (in Mantis bug #469; BFAV post
14482) that a message Url>>toText should be called #asText, and return a
Text, not a String.
Yea verily, this changeset:
* moves the various Url subclasses' #toText contents to #printOn:,
* makes Url>>printOn: use self subclassResponsibility (I'm doubtful
about the utility of this change - maybe I should just remove
Url>>printOn:),
* makes toText return the value of #asText,
* deprecates #toText, and
* changes all senders of Url>>toText to use Url>>asString.
"!