If present, I<$modified> should be a I<DateTime> object.
+=head2 $entry->wrap
+
+Take an entry in its native format and turn it into an I<XML::Feed::Entry> object.
+
+=head2 $entry->unwrap
+
+Take an I<XML::Feed::Entry> object and turn it into its native format.
+
=head1 AUTHOR & COPYRIGHT
Please see the I<XML::Feed> manpage for author, copyright, and license