PR fixes

Author: katcharov

driver-core/src/main/com/mongodb/internal/connection/OidcAuthenticator.java

@@ -72,7 +72,7 @@
 /**
  * <p>This class is not part of the public API and may be removed or changed at any time</p>
  */
-public class OidcAuthenticator extends SaslAuthenticator {
+public final class OidcAuthenticator extends SaslAuthenticator {
 
     private static final List<String> SUPPORTED_PROVIDERS = Arrays.asList("aws");
 
@@ -439,17 +439,14 @@ private OidcSaslClient(final MongoCredentialWithCache mongoCredentialWithCache)
 
         @Override
         public byte[] evaluateChallenge(final byte[] challenge) {
-            return evaluateChallengeInternal(challenge);
+            return assertNotNull(evaluateChallengeFunction).apply(challenge);
         }
 
         @Override
         public boolean isComplete() {
             return clientIsComplete();
         }
 
-        public byte[] evaluateChallengeInternal(final byte[] challenge) {
-            return assertNotNull(evaluateChallengeFunction).apply(challenge);
-        }
     }
 
     private static String readAwsTokenFromFile() {