+=item labels
+
+Returns a list of lists, calling the label method for all services
+(see L<FS::cust_svc>) of this billing item.
+
+=cut
+
+sub labels {
+ my $self = shift;
+ map { [ $_->label ] } qsearch ( 'cust_svc', { 'pkgnum' => $self->pkgnum } );
+}
+