With this definition, we can call C<< $website->host >> and it "just
works". Under the hood, Moose will call C<< $website->uri->host >> for
-you.
+you. Note that C<$website> is not automatically passed to the C<host>
+method; the invocant is C<< $website->uri >>.
We can also define a mapping as a hash reference. This allows you to
rename methods as part of the mapping: