Polish

spring-web/src/main/java/org/springframework/http/server/reactive/AbstractListenerReadPublisher.java

@@ -116,10 +116,9 @@ public abstract class AbstractListenerReadPublisher<T> implements Publisher<T> {
 	protected abstract T read() throws IOException;
 
 	/**
-	 * Suspend reading. Defaults to no-op.
+	 * Suspend reading, if the underlying API provides such a mechanism.
 	 */
-	protected void suspendReading() {
-	}
+	protected abstract void suspendReading();
 
 
 	// Private methods for use in State...

spring-web/src/main/java/org/springframework/http/server/reactive/ServletServerHttpRequest.java

@@ -266,6 +266,11 @@ class ServletServerHttpRequest extends AbstractServerHttpRequest {
 			return null;
 		}
 
+		@Override
+		protected void suspendReading() {
+			// no-op
+		}
+
 
 		private class RequestBodyPublisherReadListener implements ReadListener {