public K auth(Activity act,String type,String account){
  if (android.os.Build.VERSION.SDK_INT >= 5 && type.startsWith("g.")) {
    ah=new GoogleHandle(act,type,account);
  }
  return self();
}

public K auth ( Activity act , String type , String account ) { if ( android . os . Build . VERSION . SDK_INT >= 5 && type . startsWith ( "g." ) ) { ah = new GoogleHandle ( act , type , account ) ; } return self ( ) ; }
set the authentication type of this request . this method requires api 5 + .
