From d1a00b43019843c59a24b89ff97ed43d00768cf9 Mon Sep 17 00:00:00 2001
From: Sam Brannen <sbrannen@vmware.com>
Date: Mon, 6 Sep 2021 16:58:32 +0200
Subject: [PATCH] Polishing

See gh-27230
---
 .../test/web/servlet/setup/ConfigurableMockMvcBuilder.java      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/setup/ConfigurableMockMvcBuilder.java b/spring-test/src/main/java/org/springframework/test/web/servlet/setup/ConfigurableMockMvcBuilder.java
index 145dccc8a3..45b9f05d04 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/setup/ConfigurableMockMvcBuilder.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/setup/ConfigurableMockMvcBuilder.java
@@ -93,7 +93,7 @@ public interface ConfigurableMockMvcBuilder<B extends ConfigurableMockMvcBuilder
 	 * @since 5.3.10
 	 */
 	default <T extends B> T defaultResponseCharacterEncoding(Charset defaultResponseCharacterEncoding) {
-		throw new UnsupportedOperationException();
+		throw new UnsupportedOperationException("defaultResponseCharacterEncoding is not supported by this MockMvcBuilder");
 	}
 
 	/**