code: private static boolean isStandardAttr(String attribute) {
          // For now, we just have two standard attributes:
          // KeySize and ImplementedIn.
          if (attribute.equalsIgnoreCase("KeySize"))
              return true;
  
          if (attribute.equalsIgnoreCase("ImplementedIn"))
              return true;
  
          return false;
      }
docs: /*
  Returns true if the attribute is a standard attribute;
  otherwise, returns false.