https://source.android.com/ 
public interface android.media.IAudioFocusDispatcher extends android.os.IInterface
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.media.IAudioFocusDispatcher
  super_class: java.lang.Object
{
  public abstract void dispatchAudioFocusChange(int, java.lang.String);
    descriptor: (ILjava/lang/String;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws android.os.RemoteException
    MethodParameters:
             Name  Flags
      focusChange  
      clientId     

  public abstract void dispatchFocusResultFromExtPolicy(int, java.lang.String);
    descriptor: (ILjava/lang/String;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws android.os.RemoteException
    MethodParameters:
               Name  Flags
      requestResult  
      clientId       
}
SourceFile: "IAudioFocusDispatcher.java"
NestMembers:
  android.media.IAudioFocusDispatcher$Stub  android.media.IAudioFocusDispatcher$Stub$Proxy
InnerClasses:
  public abstract Stub = android.media.IAudioFocusDispatcher$Stub of android.media.IAudioFocusDispatcher