public Parser notOnEscape() {
        if (notOnEscapeParser == null) {
           FutureParser future = scoped("notOnEscape");
           notOnEscapeParser = future;
           future.setParser(
               sequence(
                   token("NOT"),
                   optional(
                       token("ON")
                   ),
                   token("ESCAPE"),
                   nestedStatements()
               )
           );
        }

        return notOnEscapeParser;
    }