@Override
  protected void initTarget() throws ServletException {
    targetUriTemplate = getConfigParam(P_TARGET_URI);
    if (targetUriTemplate == null)
      throw new ServletException(P_TARGET_URI+" is required.");

    //leave this.target* null to prevent accidental mis-use
  }
@ Override protected void initTarget ( ) throws ServletException { targetUriTemplate = getConfigParam ( P_TARGET_URI ) ; if ( targetUriTemplate == null ) throw new ServletException ( P_TARGET_URI + " is required." ) ; }
has {name} parts