https://openjdk.java.net/ 
public interface sun.jvm.hotspot.memory.SystemDictionary$ClassAndLoaderVisitor
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.jvm.hotspot.memory.SystemDictionary$ClassAndLoaderVisitor
  super_class: java.lang.Object
{
  public abstract void visit(sun.jvm.hotspot.oops.Klass, sun.jvm.hotspot.oops.Oop);
    descriptor: (Lsun/jvm/hotspot/oops/Klass;Lsun/jvm/hotspot/oops/Oop;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
        Name  Flags
      k       
      loader  
}
SourceFile: "SystemDictionary.java"
NestHost: sun.jvm.hotspot.memory.SystemDictionary
InnerClasses:
  public abstract ClassAndLoaderVisitor = sun.jvm.hotspot.memory.SystemDictionary$ClassAndLoaderVisitor of sun.jvm.hotspot.memory.SystemDictionary