Update the javadoc for the CompositeCodec class.

Change the  `ClassUtils.findClosestMatch` `failOnTie` to true.
  In the past when finding the appropriate delegate(codec) for a object and
  their were multiple delegates available the first one was returned.
  The problem is it could return a different delegate on each launch of the `findDelegate`.
  Now with `failOnTie` set to true a `IllegalStateException` is returned.

Author: cppwfs

spring-integration-core/src/main/java/org/springframework/integration/codec/CompositeCodec.java

@@ -27,7 +27,10 @@
 import org.springframework.util.Assert;
 
 /**
- * A Codec that can delegate to one out of many Codecs, each mapped to a class.
+ * An implementation of {@link Codec} that combines multiple codecs into a single codec,
+ * delegating encoding and decoding operations to the appropriate type-specific codec.
+ * This implementation associates object types with their appropriate codecs while providing a fallback default codec
+ * for unregistered types.
  * @author David Turanski
  * @author Glenn Renfro
  * @since 4.2
@@ -79,7 +82,7 @@ public <T> T decode(byte[] bytes, Class<T> type) throws IOException {
 	}
 
 	private Codec findDelegate(Class<?> type) {
-		Class<?> clazz = ClassUtils.findClosestMatch(type, this.delegates.keySet(), false);
+		Class<?> clazz = ClassUtils.findClosestMatch(type, this.delegates.keySet(), true);
 		return clazz == null ? this.defaultCodec : this.delegates.getOrDefault(clazz, this.defaultCodec);
 	}