@Target(value={METHOD,TYPE})
 @Retention(value=RUNTIME)
 @Inherited
public @interface ExternalDocumentation

This annotation allows referencing an external resource for extended documentation.

When it is applied to a method the value of the annotation is added to the corresponding OpenAPI operation definition.

When it is applied to a type and one or more of the fields are not empty strings the annotation value is added to the OpenAPI document root. If more than one non-empty annotation is applied to a type in the application or if the externalDocs field of the OpenAPIDefinition annotation is supplied the results are not defined.