Checkstyle code

Author: ngocnhan-tran1996

oauth2/oauth2-resource-server/src/main/java/org/springframework/security/oauth2/server/resource/introspection/SpringOpaqueTokenIntrospector.java

@@ -306,7 +306,7 @@ default List<String> getScopes() {
 	 * @author Ngoc Nhan
 	 * @since 6.5
 	 */
-	public static class SpringOpaqueTokenIntrospectorBuilder {
+	public static final class SpringOpaqueTokenIntrospectorBuilder {
 
 		private final String introspectionUri;
 

oauth2/oauth2-resource-server/src/main/java/org/springframework/security/oauth2/server/resource/introspection/SpringReactiveOpaqueTokenIntrospector.java

@@ -260,7 +260,7 @@ default List<String> getScopes() {
 	 * @author Ngoc Nhan
 	 * @since 6.5
 	 */
-	public static class SpringReactiveOpaqueTokenIntrospectorBuilder {
+	public static final class SpringReactiveOpaqueTokenIntrospectorBuilder {
 
 		private final String introspectionUri;
 

oauth2/oauth2-resource-server/src/test/java/org/springframework/security/oauth2/server/resource/introspection/SpringReactiveOpaqueTokenIntrospectorTests.java

@@ -31,7 +31,6 @@
 import okhttp3.mockwebserver.MockWebServer;
 import okhttp3.mockwebserver.RecordedRequest;
 import org.junit.jupiter.api.Test;
-import org.springframework.security.oauth2.server.resource.introspection.SpringReactiveOpaqueTokenIntrospector.SpringReactiveOpaqueTokenIntrospectorBuilder;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.ParameterizedTypeReference;
@@ -43,6 +42,7 @@
 import org.springframework.security.oauth2.core.OAuth2AuthenticatedPrincipal;
 import org.springframework.security.oauth2.core.OAuth2TokenIntrospectionClaimAccessor;
 import org.springframework.security.oauth2.core.OAuth2TokenIntrospectionClaimNames;
+import org.springframework.security.oauth2.server.resource.introspection.SpringReactiveOpaqueTokenIntrospector.SpringReactiveOpaqueTokenIntrospectorBuilder;
 import org.springframework.web.reactive.function.client.ClientResponse;
 import org.springframework.web.reactive.function.client.WebClient;