Header (one-nio 1.7.1 API)

@Retention(RUNTIME)
@Target(PARAMETER)
public @interface Header

- Required Element Summary
  
  Required Elements
  Modifier and Type Required Element Description
  
  String value
- Optional Element Summary
  
  Optional Elements
  Modifier and Type Optional Element Description
  
  boolean required

- Element Detail
  - value
```
String value
```
- - required
```
boolean required
```
    Default:
    
    false