public WriterBuilder property(final String key, final String value) {
   addProperty(key, value, toBuild.getProperties().getPropertyList());
   return this;
 }
 public WriterBuilder writer() {
   final ItemWriter writer = new ItemWriter();
   writer.setProperties(new JSLProperties());
   toBuild.setWriter(writer);
   return new WriterBuilder(writer, this);
 }
 public WriterBuilder ref(final String ref) {
   toBuild.setRef(ref);
   return this;
 }