https://openjdk.java.net/ 
public interface sun.awt.AWTAccessor$FrameAccessor
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.awt.AWTAccessor$FrameAccessor
  super_class: java.lang.Object
{
  public abstract void setExtendedState(java.awt.Frame, int);
    descriptor: (Ljava/awt/Frame;I)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      frame  
      state  

  public abstract int getExtendedState(java.awt.Frame);
    descriptor: (Ljava/awt/Frame;)I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      frame  

  public abstract java.awt.Rectangle getMaximizedBounds(java.awt.Frame);
    descriptor: (Ljava/awt/Frame;)Ljava/awt/Rectangle;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      frame  
}
SourceFile: "AWTAccessor.java"
NestHost: sun.awt.AWTAccessor
InnerClasses:
  public abstract FrameAccessor = sun.awt.AWTAccessor$FrameAccessor of sun.awt.AWTAccessor