Indicates that a class supports "pretty logging". Pretty logging is a type of
pretty-printing that uses the Redwood logging system to structure itself.
When pretty logging the contents of your object, you should check to see if
each object (call it obj) is dispatchable with
PrettyLogger.dispatchable(obj) if you don't know their type. If
true, you should call channels.prettyLog(obj) to pretty log it.
Otherwise, use its toString() method.
Pretty logs the current object to specific Redwood channels.
channels - the channels which should be logged to -- all logging calls should
use logging methods on the channels (e.g. channels.log(), etc.)
description - The description of the object. It will potentially identify the
object's functional role or (failing that) its class. This is
typically used as a track name surrounding the contents of this