Polish

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java

@@ -865,6 +865,7 @@ public class ServerProperties
 			factory.addConnectorCustomizers(new TomcatConnectorCustomizer() {
 
 				@Override
+				@SuppressWarnings("deprecation")
 				public void customize(Connector connector) {
 					ProtocolHandler handler = connector.getProtocolHandler();
 					if (handler instanceof AbstractProtocol) {

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java

@@ -528,7 +528,7 @@ public class ServerPropertiesTests {
 		embeddedContainer.start();
 		try {
 			assertThat(((AbstractProtocol<?>) embeddedContainer.getTomcat().getConnector()
-					.getProtocolHandler()).getBacklog()).isEqualTo(10);
+					.getProtocolHandler()).getAcceptCount()).isEqualTo(10);
 		}
 		finally {
 			embeddedContainer.stop();