https://source.android.com/ 
public interface android.net.wifi.p2p.WifiP2pManager$HandoverMessageListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.net.wifi.p2p.WifiP2pManager$HandoverMessageListener
  super_class: java.lang.Object
{
  public abstract void onHandoverMessageAvailable(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
                 Name  Flags
      handoverMessage  
}
SourceFile: "WifiP2pManager.java"
NestHost: android.net.wifi.p2p.WifiP2pManager
InnerClasses:
  public abstract HandoverMessageListener = android.net.wifi.p2p.WifiP2pManager$HandoverMessageListener of android.net.wifi.p2p.WifiP2pManager