docs: public static void addDevelopmentAttributes(FeatureDescriptor descriptor, 
              FaceletContext ctx, TagAttribute displayName, TagAttribute shortDescription, 
              TagAttribute expert, TagAttribute hidden, TagAttribute preferred)
      {
          if (displayName != null)
          {
              descriptor.setDisplayName(displayName.getValue(ctx));
          }
          if (shortDescription != null)
          {
              descriptor.setShortDescription(shortDescription.getValue(ctx));
          }
          if (expert != null)
          {
              descriptor.setExpert(expert.getBoolean(ctx));
          }
          if (hidden != null)
          {
              descriptor.setHidden(hidden.getBoolean(ctx));
          }
          if (preferred != null)
          {
              descriptor.setPreferred(preferred.getBoolean(ctx));
          }
      }