http://poi.apache.org/: Apache POI - Java API To Access Microsoft Format Files (Apache Software Foundation) 
public interface org.apache.poi.util.Internal extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: org.apache.poi.util.Internal
  super_class: java.lang.Object
{
  public abstract java.lang.String value();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    AnnotationDefault: ""

  public abstract java.lang.String since();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    AnnotationDefault: ""
}
SourceFile: "Internal.java"
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Documented()
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME:Ljava/lang/annotation/RetentionPolicy;)