AsyncContext

```
public final class AsyncContext
extends Object
```
A list of records with fields [[AsyncContextKey]] (a Symbol) and [[AsyncContextValue]] (an ECMAScript language value).

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static AsyncContext`	`empty()`
`Object`	`getOrDefault(Symbol asyncContextKey, Object defaultValue)`
`String`	`toString()`
`AsyncContext`	`withMapping(Symbol key, Object value)`

public AsyncContext withMapping(Symbol key,
                                Object value)

public Object getOrDefault(Symbol asyncContextKey,
                           Object defaultValue)

Class AsyncContext