code: public void pushRoute(SipURI uri) {
  		checkReadOnly();
  		javax.sip.address.SipURI sipUri = ((SipURIImpl) uri).getSipURI();
  			sipUri.setLrParam();
  		pushRoute(sipUri);
  	}
docs: /*
  (non-Javadoc)
  @see javax.servlet.sip.SipServletRequest#pushRoute(javax.servlet.sip.SipURI)