public ProgressBarProxyPrototype() {
   if (progressBarProxyPrototype == null && getClass().equals(ProgressBarProxyPrototype.class)) {
     progressBarProxyPrototype = this;
     KrollGeneratedBindings.registerUsedPrototypeClass(getClass());
   }
 }
 public AttrProxyPrototype() {
   if (attrProxyPrototype == null && getClass().equals(AttrProxyPrototype.class)) {
     attrProxyPrototype = this;
     KrollGeneratedBindings.registerUsedPrototypeClass(getClass());
   }
 }