Add refund to balance client

lib/requests/CreateRefundToBalanceInitRequest.js

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+'use strict';
+
+var BaseRequest = require('./BaseRequest'),
+    util = require('util'),
+
+function CreateRefundoBalanceInitRequest(request) {
+    BaseRequest.call(this, {
+        locale: request['locale'],
+        conversationId: request['conversationId'],
+        paymentId: request['paymentId'],
+        callbackUrl: request["callbackUrl"],
+    });
+}
+
+util.inherits(CreateRefundoBalanceInitRequest, BaseRequest);
+
+module.exports = CreateRefundoBalanceInitRequest;

lib/resources/RefundToBalance.js

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+'use strict';
+
+var IyzipayResource = require('../IyzipayResource');
+
+function RefundToBalance() {
+    this._config = arguments[0];
+    this._api = {
+        create: {
+            path: '/payment/refund-to-balance/init',
+            method: 'POST',
+            requestModel: 'CreateRefundToBalanceInitRequest'
+        }
+    };
+}
+
+RefundToBalance.prototype = new IyzipayResource();
+
+module.exports = RefundToBalance;

samples/IyzipayRefundToBalance.js

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+var should = require("should"),
+  assert = require("assert"),
+  Iyzipay = require("../lib/Iyzipay"),
+  options = require("./data/options");
+
+describe("Iyzipay refund to Balance API Test", function() {
+  var iyzipay;
+
+  before(function(done) {
+    iyzipay = new Iyzipay(options);
+    done();
+  });
+
+  describe("refund to Balance", function() {
+    it("refund to Balance init api test", function(done) {
+      var request = {
+        locale: Iyzipay.LOCALE.TR,
+        conversationId: '123456789',
+        paymentId: 700000102,
+        callbackUrl: 'https://merchantwebsite.com',
+      };
+      iyzipay.refundToBalance.create(request, function(err, result) {
+        console.log(err, result);
+        done();
+      });
+    });
+  });
+});