Fix "empty text" bug by the toStirng() method of the wrapped version …

…xmlbuilder

lib/api/2011-02-01/configuration.js

@@ -229,17 +229,12 @@ handlers.DefineIndexField = function(context, request, response) {
 function createDeleteIndexFieldResponse(options) {
   var doc = xmlbuilder.create();
 
-  // This is a workaround for the problem that text() does not work when empty string is given.
-  // https://github.com/oozcitak/xmlbuilder-js/pull/19
-  var requestId = doc.begin('DeleteIndexFieldResponse', {version: '1.0'}).attribute('xmlns', XMLNS)
-    .element('DeleteIndexFieldResult')
-    .up()
+  doc.begin('DeleteIndexFieldResponse', {version: '1.0'})
+    .attribute('xmlns', XMLNS)
+    .element('DeleteIndexFieldResult').up()
     .element('ResponseMetadata')
-      .element('RequestId');
-
-  if (options.requestId && options.requestId !== '') {
-    requestId.text(options.requestId);
-  }
+      .element('RequestId').text(options.requestId || '').up()
+    .up();
 
   return doc.toString();
 }

lib/xmlbuilder.js

@@ -1,7 +1,16 @@
 module.exports = require('xmlbuilder');
 module.exports.XMLFragment = require('xmlbuilder/lib/XMLFragment');
+
 module.exports.XMLFragment.prototype.addFragment = function(fragment) {
   fragment.parent = this;
   this.children.push(fragment);
   return this;
 };
+
+// This is a workaround for the problem that text() does not work when empty string is given.
+// https://github.com/oozcitak/xmlbuilder-js/pull/19
+var originalToString = module.exports.XMLFragment.prototype.toString;
+module.exports.XMLFragment.prototype.toString = function() {
+  var string = originalToString.apply(this, arguments);
+  return string.replace(/<\/>/g, '');
+};