diff --git a/spring-security-kerberos-client/src/main/java/org/springframework/security/kerberos/client/KerberosRestTemplate.java b/spring-security-kerberos-client/src/main/java/org/springframework/security/kerberos/client/KerberosRestTemplate.java
index 3effafb..8aa2b31 100644
--- a/spring-security-kerberos-client/src/main/java/org/springframework/security/kerberos/client/KerberosRestTemplate.java
+++ b/spring-security-kerberos-client/src/main/java/org/springframework/security/kerberos/client/KerberosRestTemplate.java
@@ -163,18 +163,6 @@ public class KerberosRestTemplate extends RestTemplate {
 		this(keyTabLocation, userPrincipal, password, loginOptions, buildHttpClient());
 	}
 
-	/**
-	 * Instantiates a new kerberos rest template.
-	 *
-	 * @param keyTabLocation the key tab location
-	 * @param userPrincipal the user principal
-	 * @param loginOptions the login options
-	 * @param httpClient the http client
-	 */
-	private KerberosRestTemplate(String keyTabLocation, String userPrincipal, Map<String, Object> loginOptions, HttpClient httpClient) {
-		this(keyTabLocation, userPrincipal, null, loginOptions, httpClient);
-	}
-
 	/**
 	 * Instantiates a new kerberos rest template.
 	 *
diff --git a/spring-security-kerberos-core/src/test/java/org/springframework/security/kerberos/authentication/KerberosServiceAuthenticationProviderTest.java b/spring-security-kerberos-core/src/test/java/org/springframework/security/kerberos/authentication/KerberosServiceAuthenticationProviderTest.java
index be43233..6842eb6 100644
--- a/spring-security-kerberos-core/src/test/java/org/springframework/security/kerberos/authentication/KerberosServiceAuthenticationProviderTest.java
+++ b/spring-security-kerberos-core/src/test/java/org/springframework/security/kerberos/authentication/KerberosServiceAuthenticationProviderTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2015 the original author or authors.
+ * Copyright 2009-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,10 +34,6 @@ import org.springframework.security.core.userdetails.User;
 import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.core.userdetails.UsernameNotFoundException;
-import org.springframework.security.kerberos.authentication.KerberosServiceAuthenticationProvider;
-import org.springframework.security.kerberos.authentication.KerberosServiceRequestToken;
-import org.springframework.security.kerberos.authentication.KerberosTicketValidation;
-import org.springframework.security.kerberos.authentication.KerberosTicketValidator;
 
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.junit.jupiter.api.Assertions.assertEquals;
diff --git a/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/AuthProviderConfig.java b/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/AuthProviderConfig.java
index 1b55b36..19847c3 100644
--- a/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/AuthProviderConfig.java
+++ b/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/AuthProviderConfig.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 the original author or authors.
+ * Copyright 2015-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,37 +17,12 @@ package org.springframework.security.kerberos.docs;
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-// import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
-// import org.springframework.security.config.annotation.web.servlet.configuration.EnableWebMvcSecurity;
 import org.springframework.security.kerberos.authentication.KerberosAuthenticationProvider;
 import org.springframework.security.kerberos.authentication.sun.SunJaasKerberosClient;
 
 //tag::snippetA[]
 @Configuration
-// @EnableWebMvcSecurity
-public class AuthProviderConfig /*extends WebSecurityConfigurerAdapter*/ {
-
-    // @Override
-    // protected void configure(HttpSecurity http) throws Exception {
-    //     http
-    //         .authorizeRequests()
-    //             .antMatchers("/", "/home").permitAll()
-    //             .anyRequest().authenticated()
-    //             .and()
-    //         .formLogin()
-    //             .loginPage("/login").permitAll()
-    //             .and()
-    //         .logout()
-    //             .permitAll();
-    // }
-
-    // @Override
-    // protected void configure(AuthenticationManagerBuilder auth) throws Exception {
-    //     auth
-    //         .authenticationProvider(kerberosAuthenticationProvider());
-    // }
+public class AuthProviderConfig {
 
     @Bean
     public KerberosAuthenticationProvider kerberosAuthenticationProvider() {
diff --git a/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/SpnegoConfig.java b/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/SpnegoConfig.java
index 518e48f..ae264ed 100644
--- a/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/SpnegoConfig.java
+++ b/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/docs/SpnegoConfig.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 the original author or authors.
+ * Copyright 2015-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,51 +19,16 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.io.FileSystemResource;
 import org.springframework.security.authentication.AuthenticationManager;
-import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-// import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
-// import org.springframework.security.config.annotation.web.servlet.configuration.EnableWebMvcSecurity;
 import org.springframework.security.kerberos.authentication.KerberosAuthenticationProvider;
 import org.springframework.security.kerberos.authentication.KerberosServiceAuthenticationProvider;
 import org.springframework.security.kerberos.authentication.sun.SunJaasKerberosClient;
 import org.springframework.security.kerberos.authentication.sun.SunJaasKerberosTicketValidator;
 import org.springframework.security.kerberos.web.authentication.SpnegoAuthenticationProcessingFilter;
 import org.springframework.security.kerberos.web.authentication.SpnegoEntryPoint;
-import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;
 
 //tag::snippetA[]
 @Configuration
-// @EnableWebMvcSecurity
-public class SpnegoConfig /*extends WebSecurityConfigurerAdapter*/ {
-
-    // @Override
-    // protected void configure(HttpSecurity http) throws Exception {
-    //     http
-    //         .exceptionHandling()
-    //             .authenticationEntryPoint(spnegoEntryPoint())
-    //             .and()
-    //         .authorizeRequests()
-    //             .antMatchers("/", "/home").permitAll()
-    //             .anyRequest().authenticated()
-    //             .and()
-    //         .formLogin()
-    //             .loginPage("/login").permitAll()
-    //             .and()
-    //         .logout()
-    //             .permitAll()
-    //             .and()
-    //         .addFilterBefore(
-    //                 spnegoAuthenticationProcessingFilter(authenticationManagerBean()),
-    //                 BasicAuthenticationFilter.class);
-    // }
-
-    // @Override
-    // protected void configure(AuthenticationManagerBuilder auth)
-    // 		throws Exception {
-    //     auth
-    //         .authenticationProvider(kerberosAuthenticationProvider())
-    //         .authenticationProvider(kerberosServiceAuthenticationProvider());
-    // }
+public class SpnegoConfig {
 
     @Bean
     public KerberosAuthenticationProvider kerberosAuthenticationProvider() {
diff --git a/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/web/SpnegoAuthenticationProcessingFilterTest.java b/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/web/SpnegoAuthenticationProcessingFilterTest.java
index 0710103..3088b73 100644
--- a/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/web/SpnegoAuthenticationProcessingFilterTest.java
+++ b/spring-security-kerberos-web/src/test/java/org/springframework/security/kerberos/web/SpnegoAuthenticationProcessingFilterTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2015 the original author or authors.
+ * Copyright 2009-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,11 +15,6 @@
  */
 package org.springframework.security.kerberos.web;
 
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.never;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
 import java.io.IOException;
 
 import jakarta.servlet.FilterChain;
@@ -31,7 +26,6 @@ import jakarta.servlet.http.HttpServletResponse;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-import org.mockito.ArgumentMatchers;
 
 import org.springframework.security.authentication.AnonymousAuthenticationToken;
 import org.springframework.security.authentication.AuthenticationManager;
@@ -51,6 +45,10 @@ import org.springframework.security.web.authentication.WebAuthenticationDetailsS
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
 
 /**