test: InvertedBooleanFactoryBean jdoc test

Author: boolivar

int-aws-support/src/main/java/org/springframework/integration/aws/support/config/xml/InvertedBooleanFactoryBean.java

@@ -1,9 +1,21 @@
 package org.springframework.integration.aws.support.config.xml;
 
 import org.springframework.beans.factory.FactoryBean;
+import org.springframework.lang.NonNull;
 
+/**
+ * Factory bean to invert(negate) Boolean value.
+ * 
+ * <pre><code lang="spock">
+ * def "boolean inverted"() {
+ *   expect:
+ *     new InvertedBooleanFactoryBean(true).getObject() == false
+ *     new InvertedBooleanFactoryBean(false).getObject() == true
+ * }
+ * </code></pre>
+ */
 public class InvertedBooleanFactoryBean implements FactoryBean<Boolean> {
-    
+
     private final boolean value;
 
     public InvertedBooleanFactoryBean(boolean value) {
@@ -15,6 +27,7 @@ public Class<?> getObjectType() {
         return Boolean.class;
     }
 
+    @NonNull
     @Override
     public Boolean getObject() {
         return !value;