public void inquiryPaymentChannel(FaspayInquiryServiceCallback mCallback)
        {
            this.mHandler = mCallback;
            JsonObject request = new JsonObject();

            request.Add("request", "");
            request.Add("merchant_id", mFaspayConfig.user.merchantId);
            request.Add("merchant", mFaspayConfig.user.merchantName);
            request.Add("signature", mFaspayConfig.user.calculateSignature());
            sendRequestHttpPost(mFaspayConfig.getInquiryPaymentChannelUrl(), request, new InquiryPCCallback(mCallback));
        }
 public InquiryPCCallback(FaspayInquiryServiceCallback mCallback)
 {
     this.mCallback = mCallback;
 }