https://source.android.com/ 
public interface android.nfc.INfcUnlockHandler extends android.os.IInterface
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.nfc.INfcUnlockHandler
  super_class: java.lang.Object
{
  public abstract boolean onUnlockAttempted(android.nfc.Tag);
    descriptor: (Landroid/nfc/Tag;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws android.os.RemoteException
    MethodParameters:
      Name  Flags
      tag   
}
SourceFile: "INfcUnlockHandler.java"
NestMembers:
  android.nfc.INfcUnlockHandler$Stub  android.nfc.INfcUnlockHandler$Stub$Proxy
InnerClasses:
  public abstract Stub = android.nfc.INfcUnlockHandler$Stub of android.nfc.INfcUnlockHandler