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MadelineProto/docs/TD_docs/constructors/optionEmpty.md

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---
title: optionEmpty
description: Unknown option or option having default value
---
## Constructor: optionEmpty
[Back to constructors index](index.md)
Unknown option or option having default value
### Attributes:
| Name | Type | Required | Description |
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|----------|---------------|----------|-------------|
### Type: [OptionValue](../types/OptionValue.md)
### Example:
```
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$optionEmpty = ['_' => 'optionEmpty'];
```
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[PWRTelegram](https://pwrtelegram.xyz) json-encoded version:
```
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{"_": "optionEmpty"}
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```
Or, if you're into Lua:
```
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optionEmpty={_='optionEmpty'}
```