code: public String getName() {
          String name = super.getName();
          if (name != null) {
              if (name.equals(getParameterDescriptor().getDisplayName()) ||
                  name.length() == 0) {
                  name = null;
              }
          }
          
          return name;
      }
docs: Returns the formal param name, or null if the formal name is not
  available.