https://openjdk.java.net/ 
public interface sun.awt.AWTAccessor$ContainerAccessor
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.awt.AWTAccessor$ContainerAccessor
  super_class: java.lang.Object
{
  public abstract void validateUnconditionally(java.awt.Container);
    descriptor: (Ljava/awt/Container;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      cont  

  public abstract java.awt.Component findComponentAt(java.awt.Container, int, int, boolean);
    descriptor: (Ljava/awt/Container;IIZ)Ljava/awt/Component;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
               Name  Flags
      cont           
      x              
      y              
      ignoreEnabled  
}
SourceFile: "AWTAccessor.java"
NestHost: sun.awt.AWTAccessor
InnerClasses:
  public abstract ContainerAccessor = sun.awt.AWTAccessor$ContainerAccessor of sun.awt.AWTAccessor