Fix new Sonar smells

Author: artembilan

spring-integration-core/src/main/java/org/springframework/integration/dsl/DelayerEndpointSpec.java

@@ -30,7 +30,6 @@
 import org.springframework.integration.transaction.TransactionInterceptorBuilder;
 import org.springframework.messaging.Message;
 import org.springframework.messaging.MessageChannel;
-import org.springframework.transaction.PlatformTransactionManager;
 import org.springframework.transaction.TransactionManager;
 import org.springframework.transaction.interceptor.TransactionInterceptor;
 import org.springframework.util.Assert;
@@ -167,7 +166,7 @@ public DelayerEndpointSpec retryDelay(long retryDelay) {
 
 	/**
 	 * Specify a {@link TransactionInterceptor} {@link Advice} with default
-	 * {@link PlatformTransactionManager} and
+	 * {@link TransactionManager} and
 	 * {@link org.springframework.transaction.interceptor.DefaultTransactionAttribute} for
 	 * the
 	 * {@link org.springframework.messaging.MessageHandler}.

spring-integration-mail/src/main/java/org/springframework/integration/mail/AbstractMailReceiver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -456,7 +456,7 @@ private Object[] convertMessagesIfNecessary(MimeMessage[] filteredMessages) {
 		}
 	}
 
-	private Object extractContent(MimeMessage message, Map<String, Object> headers) {
+	private Object extractContent(MimeMessage message, Map<String, Object> headers) { // NOSONAR
 		Object content;
 		try {
 			MimeMessage theMessage = message;

spring-integration-mail/src/main/java/org/springframework/integration/mail/MailTransportUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2007-2019 the original author or authors.
+ * Copyright 2007-2020 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.
@@ -80,7 +80,7 @@ public static void closeFolder(Folder folder, boolean expunge) {
 	 * @param name The URL name.
 	 * @return The result with password protection.
 	 */
-	public static String toPasswordProtectedString(URLName name) {
+	public static String toPasswordProtectedString(URLName name) { // NOSONAR
 		String protocol = name.getProtocol();
 		String username = name.getUsername();
 		String password = name.getPassword();