https://openjdk.java.net/ 
public interface javax.xml.bind.annotation.XmlEnum extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: javax.xml.bind.annotation.XmlEnum
  super_class: java.lang.Object
{
  public abstract java.lang.Class<?> value();
    descriptor: ()Ljava/lang/Class;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljava/lang/Class<*>;
    AnnotationDefault: Ljava/lang/String;
}
SourceFile: "XmlEnum.java"
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME:Ljava/lang/annotation/RetentionPolicy;)
      java.lang.annotation.Target(value = {java.lang.annotation.ElementType.TYPE:Ljava/lang/annotation/ElementType;})