private void addResourcePath(JDefinedClass cls, Feed feed) {
    JFieldVar field = cls.field(privateStaticFinal, String.class, "RESOURCE_PATH");
    field.init(JExpr.lit(feed.getHref()));

    JMethod method = cls.method(JMod.PROTECTED | JMod.FINAL, String.class, "resourcePath");
    method.annotate(Override.class);
    method.body()._return(field);
  }