ExtensionStartOutput (HiveMQ Extension SDK 4.4.0 API)

```
@DoNotImplement
public interface ExtensionStartOutput
```
Output object for the start of an extension.

Since:

4.0.0, CE 2019.1

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void preventExtensionStartup(@NotNull String reason)
  Prevents the further startup of this extension.

- Method Detail
  - preventExtensionStartup
```
void preventExtensionStartup(@NotNull String reason)
```
    Prevents the further startup of this extension.
    The extension will be automatically disabled by HiveMQ if this method is called.
    
    Parameters:
    
    reason - A human readable reason why the extension startup is canceled.
    
    Since:
    
    4.0.0, CE 2019.1