Metaobject that supports punning of roles.
Warning: this role is part of the Rakudo implementation, and is not a part of the language specification.
Implements the ability to create objects from
Roles without the intermediate need to use a class. Not intended to be used directly (will in fact error if it's
used), but via punning of roles, as below. This is also Rakudo specific and not part of the spec.
;my = A.new;say .b; # OUTPUT: «punned␤»