@Target(value={METHOD,TYPE})
 @Retention(value=RUNTIME)
public @interface Description
--help command is
 specified. Description annotations placed on interfaces that extend PipelineOptions will
 describe groups of related options. Description annotations placed on getter methods will be used
 to provide human readable information for the specific option.| Modifier and Type | Required Element and Description | 
|---|---|
| java.lang.String | value |