user. In this recipe we label the C<url> attribute with "The site's
URL" and create a simple method showing how to use that label.
+The proper, modern way to extend attributes (using a role instead of a
+subclass) is described in L<Moose::Cookbook::Meta::Recipe3>, but that recipe
+assumes you've read and at least tried to understand this one.
+
=head1 META-ATTRIBUTE OBJECTS
All the attributes of a Moose-based object are actually objects