code: @Override
      public JwtToken buildJwt() throws JwtException, InvalidBuilderException {
          // Create JWT here
          // TODO check for default claims?
          JwtConfig config = getConfig(configId);
          JwtToken jwt = new TokenImpl(this, config);
  
          return jwt;
      }
docs: /*
  (non-Javadoc)
  
  @see com.ibm.ws.security.jwt.internal.Builder#buildJwt()