FWIW 'has $!a handles TypeObject' is now implemented, and works fine for
roles.
It doesn't work for classes, because they have a .new method. So the
standard .new is overridden, trying to call the .new on an attribute,
but since there's no instance yet, the access to the attribute fails.
That's a
# New Ticket Created by "Carl Mäsak"
# Please include the string: [perl #81548]
# in the subject line of all future correspondence about this issue.
# http://rt.perl.org/rt3/Ticket/Display.html?id=81548 >
rakudo: class A { has @.b handles Array }; my $a = A.new; say
$a.b.perl; $a.push(1, 2,
