https://source.android.com/ 
public interface android.service.wallpaper.IWallpaperService extends android.os.IInterface
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.service.wallpaper.IWallpaperService
  super_class: java.lang.Object
{
  public abstract void attach(android.service.wallpaper.IWallpaperConnection, android.os.IBinder, int, boolean, int, int, android.graphics.Rect);
    descriptor: (Landroid/service/wallpaper/IWallpaperConnection;Landroid/os/IBinder;IZIILandroid/graphics/Rect;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws android.os.RemoteException
    MethodParameters:
             Name  Flags
      connection   
      windowToken  
      windowType   
      isPreview    
      reqWidth     
      reqHeight    
      padding      
}
SourceFile: "IWallpaperService.java"
NestMembers:
  android.service.wallpaper.IWallpaperService$Stub  android.service.wallpaper.IWallpaperService$Stub$Proxy
InnerClasses:
  public abstract Stub = android.service.wallpaper.IWallpaperService$Stub of android.service.wallpaper.IWallpaperService