@NotNull
    public static List<String> verifyAuthorizationInputs(@Nullable final String loginType, @Nullable final String clientId, @Nullable final String clientSecret, @Nullable final String username, @Nullable final String password, @NotNull final String proxyPort) {
        final List<String> exceptionMessages = new ArrayList<>();
        addVerifyLoginType(exceptionMessages, loginType, LOGIN_TYPE);
        addVerifyNotNullOrEmpty(exceptionMessages, clientId, CLIENT_ID);