```
public class MetaContext
extends Object
```
Manages fields per thread, which are serialized as json for further processing (eg. logstash). See 'Say' class for usage.

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`clear()`
`static boolean`	`hasKey(String key)`
`static boolean`	`hasMeta()`
`static void`	`put(String key, Object value)`
`static void`	`putIfAbsent(String key, Object value)`
`static String`	`toJson()`

public static void put(String key,
                       Object value)

public static void putIfAbsent(String key,
                               Object value)

public static boolean hasKey(String key)

Class MetaContext