How to make binding to Android method without parameters?

[gkmiel-hb]

I am working on Firebase binding for Android. If I add method without parameters to java class, then it isn't visible from MAUI app (get error). If I add fake parameter to the same method, it becomes visible. Below is sample code with getString method

public class FirebaseSdk
{
    static FirebaseAnalytics mFirebaseAnalytics;

    public static void initializeSDK(Activity activity) {
    	Application application = activity.getApplication();

	// Obtain the FirebaseAnalytics instance.
	mFirebaseAnalytics = FirebaseAnalytics.getInstance(application);
    }

    public static void logEvent(String eventName, Bundle bundle) {
	mFirebaseAnalytics.logEvent(eventName, bundle);
    }

    // Invisible
    //public static String getString()
    //{
    //    return "result";
    //}

   // Visible
    public static String getString(String fake)
    {
        return "result";
    }
}

Error message for method without parameters:
error CS0117: 'FirebaseSdk' does not contain a definition for 'GetString'

P.s. Methods without returning something works fine:

    public static void resetAnalyticsData()
    {
        mFirebaseAnalytics.resetAnalyticsData();
    }