private static void showConflictMessage(final Activity activity) {
        new MaterialDialog.Builder(activity)
                .title(R.string.authenticator_conflict_title)
                .content(R.string.authenticator_conflict_message)
                .positiveText(android.R.string.ok)
                .cancelListener(dialog -> activity.finish())
                .onPositive((dialog, which) -> activity.finish())
                .show();
    }
Show conflict message about previously registered authenticator from
another application

@param activity
app/src/main/java/com/github/pockethub/android/accounts/AccountUtils.java