Returns the customer (see L<FS::cust_main>) for this invoice.
+=item suspend
+
+Suspends all unsuspended packages (see L<FS::cust_pkg>) for this invoice
+
+Returns a list: an empty list on success or a list of errors.
+
+=cut
+
+sub suspend {
+ my $self = shift;
+
+ grep { $_->suspend(@_) }
+ grep { $_->getfield('cancel') }
+ $self->cust_pkg;
+
+}
+
=item cust_suspend_if_balance_over AMOUNT
Suspends the customer associated with this invoice if the total amount owed on