use @testonly

Author: Vladimir Kotal

plugins/pom.xml

@@ -97,6 +97,11 @@ Portions Copyright (c) 2020, Chris Fraire <[email protected]>.
             <artifactId>mockito-core</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.jetbrains</groupId>
+            <artifactId>annotations</artifactId>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
     <build>

plugins/src/main/java/opengrok/auth/plugin/UserWhiteListPlugin.java

@@ -25,6 +25,7 @@
 
 import jakarta.servlet.http.HttpServletRequest;
 import opengrok.auth.plugin.entity.User;
+import org.jetbrains.annotations.TestOnly;
 import org.opengrok.indexer.authorization.IAuthorizationPlugin;
 import org.opengrok.indexer.configuration.Group;
 import org.opengrok.indexer.configuration.Project;
@@ -79,7 +80,7 @@ public void load(Map<String, Object> parameters) {
                 new Object[]{filePath, whitelist.size(), fieldName});
     }
 
-    // for testing
+    @TestOnly
     Set<String> getWhitelist() {
         return whitelist;
     }