});
requestSampleBoxPanel.add(requestUriTextBox);
// remove request string hyperlink
Hyperlink removeRequestStringHyperlink = new Hyperlink(GuiFactory.strings.remove(), true, "");
removeRequestStringHyperlink.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
ReferenceManager.removeAllReferences(parameterTree.requestString);
// if there are other requests left, just delete the current one
if (ReferenceManager.allRequestStrings.size() > 0) {
parameterTree.requestTree.removeFromParent();