https://openjdk.java.net/ 
public interface com.sun.tools.internal.xjc.outline.CustomizableOutline
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.tools.internal.xjc.outline.CustomizableOutline
  super_class: java.lang.Object
{
  public abstract com.sun.tools.internal.xjc.model.CCustomizable getTarget();
    descriptor: ()Lcom/sun/tools/internal/xjc/model/CCustomizable;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeInvisibleAnnotations: 
      com.sun.istack.internal.NotNull()

  public abstract com.sun.codemodel.internal.JDefinedClass getImplClass();
    descriptor: ()Lcom/sun/codemodel/internal/JDefinedClass;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeInvisibleAnnotations: 
      com.sun.istack.internal.NotNull()
}
SourceFile: "CustomizableOutline.java"