https://www.graalvm.org/ 
public interface com.oracle.truffle.api.library.GenerateLibrary$DefaultExport extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: com.oracle.truffle.api.library.GenerateLibrary$DefaultExport
  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<*>;
}
SourceFile: "GenerateLibrary.java"
NestHost: com.oracle.truffle.api.library.GenerateLibrary
InnerClasses:
  public abstract DefaultExport = com.oracle.truffle.api.library.GenerateLibrary$DefaultExport of com.oracle.truffle.api.library.GenerateLibrary
  public abstract Repeat = com.oracle.truffle.api.library.GenerateLibrary$DefaultExport$Repeat of com.oracle.truffle.api.library.GenerateLibrary$DefaultExport
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.CLASS:Ljava/lang/annotation/RetentionPolicy;)
      java.lang.annotation.Target(value = {java.lang.annotation.ElementType.TYPE:Ljava/lang/annotation/ElementType;})
      java.lang.annotation.Repeatable(value = Lcom/oracle/truffle/api/library/GenerateLibrary$DefaultExport$Repeat;)