@Retention(value=RUNTIME)
@Target(value={TYPE,FIELD,METHOD,PARAMETER,CONSTRUCTOR,LOCAL_VARIABLE,PACKAGE})
public @interface DeveloperApi
A lower-level, unstable API intended for developers.
Developer API's might change or be removed in minor versions of Spark.
NOTE: If there exists a Scaladoc comment that immediately precedes this annotation, the first
line of the comment must be "" with no trailing blank line. This is because
of the known issue that Scaladoc displays only either the annotation or the comment, whichever
comes first.