ACE-4744 javadoc and cleanup

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@119697 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/traitextender/InstanceExtension.java

@@ -19,6 +19,12 @@
 
 package org.alfresco.traitextender;
 
+/**
+ * Sub classes are extension API implementors that get instantiated once per
+ * extensible-extension point definition.
+ *
+ * @author Bogdan Horje
+ */
 public abstract class InstanceExtension<E, T extends Trait>
 {
     protected T trait;