0;
}
+=item will_send_invoice
+
+Action classes may define a will_send_invoice method that returns true, indicating
+that this action is sending out an invoice.
+
+=cut
+
+#default
+sub will_send_invoice {
+ 0;
+}
+
=item do_action CUSTOMER_EVENT_OBJECT
Action classes must define an action method. This method is triggered if