protected static final String OIC_REDIRECT_URL = "oic.redirect.url";

    /** Configuration key for OpenID Connect token server URL. */
    protected static final String OIC_TOKEN_SERVER_URL = "oic.token.server.url";

    /** Configuration key for OpenID Connect client secret. */
    protected static final String OIC_CLIENT_SECRET = "oic.client.secret";

import com.nimbusds.jwt.JWTParser;
import com.nimbusds.oauth2.sdk.AuthorizationCode;
import com.nimbusds.openid.connect.sdk.AuthenticationErrorResponse;
import com.nimbusds.openid.connect.sdk.AuthenticationResponse;
import com.nimbusds.openid.connect.sdk.AuthenticationResponseParser;
import com.nimbusds.openid.connect.sdk.AuthenticationSuccessResponse;

import jakarta.annotation.PostConstruct;

    }

    public void test_variousTokenTypes() {
        // Test with various common token types
        String[] tokenTypes = { "Bearer", "JWT", "OAuth", "OAuth2", "APIKey", "Session", "Basic", "Digest", "SAML", "OpenID" };

        for (String tokenType : tokenTypes) {
            String message = tokenType + " token is invalid";
            InvalidAccessTokenException exception = new InvalidAccessTokenException(tokenType, message);

        assertEquals(0, authenticators.length);
    }

    // Test getSsoType() with actual FessConfig
    public void test_getSsoType_withFessConfig() {
        final String expectedSsoType = "openid";
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getSsoType() {
                return expectedSsoType;
            }
        };