$self->{default};
}
+# slots
+
+sub slots { (shift)->name }
+
# class association
sub attach_to_class {
value is a CODE reference, this accessor will pass a single additional
argument C<$instance> into it and return the value.
+=item B<slots>
+
+Returns a list of slots required by the attribute. This is usually
+just one, which is the name of the attribute.
+
=back
=head2 Informational predicates