public Parser copybookHoldingBehaviour() {
        if (copybookHoldingBehaviourParser == null) {
           FutureParser future = scoped("copybookHoldingBehaviour");
           copybookHoldingBehaviourParser = future;
           future.setParser(
               sequence(
                   star(
                       sentence()
                   ),
                   star(
                       paragraph()
                   ),
                   star(
                       section()
                   )
               )
           );
        }

        return copybookHoldingBehaviourParser;
    }