https://openjdk.java.net/ 
public interface com.sun.tools.hat.internal.oql.ObjectVisitor
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.tools.hat.internal.oql.ObjectVisitor
  super_class: java.lang.Object
{
  public abstract boolean visit(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      o     
}
SourceFile: "ObjectVisitor.java"