ExternalDocumentation (swagger-annotations 2.2.21 API)

```
@Target({METHOD,TYPE,ANNOTATION_TYPE})
@Retention(RUNTIME)
@Inherited
public @interface ExternalDocumentation
```
The annotation may be used at method level or as field of Operation to add a reference to an external resource for extended documentation of an Operation (OpenAPI specification).
It may also be used to add external documentation to Tag, Header or Schema, or as field of OpenAPIDefinition.

See Also:

External Documentation (OpenAPI specification), OpenAPIDefinition

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`String`	`description`	A short description of the target documentation.
`Extension[]`	`extensions`	The list of optional extensions
`String`	`url`	The URL for the target documentation.

- Element Detail
  - description
```
String description
```
    A short description of the target documentation.
    
    Returns:
    
    the documentation description
    
    Default:
    
    ""
- - url
```
String url
```
    The URL for the target documentation. Value must be in the format of a URL.
    
    Returns:
    
    the documentation URL
    
    Default:
    
    ""
- - extensions
```
Extension[] extensions
```
    The list of optional extensions
    
    Returns:
    
    an optional array of extensions
    
    Default:
    
    {}