public static AppEventsLogger newLogger(Context context, String applicationId) {
        return new AppEventsLogger(context, applicationId, null);
    }
public static AppEventsLogger newLogger ( Context context , String applicationId ) { return new AppEventsLogger ( context , applicationId , null ) ; }
Build an AppEventsLogger instance to log events that are attributed to the application but not to
any particular Session.

@param context       Used to access the attributionId for non-authenticated users.
@param applicationId Explicitly specified Facebook applicationId to log events against.  If null, the default
app ID specified
in the package metadata will be used.
@return AppEventsLogger instance to invoke log* methods on.