class Mapbox {

  static boolean isAccessTokenValid(@Nullable String accessToken) {
    if (accessToken == null) {
      return false;
    }

    accessToken = accessToken.trim().toLowerCase(MapboxConstants.MAPBOX_LOCALE);
    return accessToken.length() != 0 && (accessToken.startsWith("pk.") || accessToken.startsWith("sk."));
  }

    Mapbox(@NonNull Context context, @Nullable String accessToken);

}