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---
title: testCallBytes
description: Test request. Returns back received bytes
image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
---
# Method: testCallBytes
[Back to methods index](index.md)
YOU CANNOT USE THIS METHOD IN MADELINEPROTO
Test request. Returns back received bytes
### Parameters:
| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|x|[bytes](../types/bytes.md) | Bytes to return | Yes|
### Return type: [TestBytes](../types/TestBytes.md)