.nil (default) then traceObjects are not
collected.
.nil then from that moment on, the
fully initialized traceObjects
will get sent as the argument to the
APPEND message to the notify object.
APPEND message, the
traceObject will have all entries set,
which may be important for real-time processing.
APPEND message such that one can use e.g.
the OrderedCollection classes
Array or
List
for collecting the traceObjects.
APPEND method and use
an instance of it assigned to the NOTIFY
class object, and thereby become able to process each freshly created
traceObject in real-time, if
this is considered to be necessary.