## API-method `updateextension`

## Since 
`v23.0`

### Signature
``` c++
bool updateextension(string URL, string ExtName);
```

### Description
Updates an extension.

### Arguments
- **URL** `(string)` - URL to download an extension.
- **ExtName** `(string)` - Extension name.

### Return value
`true` on success or `failure` result on error.
