JavaDoc for transfer service.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@18913 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/service/cmr/transfer/NodeCrawler.java

@@ -4,9 +4,20 @@ import java.util.Set;
 
 import org.alfresco.service.cmr.repository.NodeRef;
 
+/**
+ * The NodeCrawler finds nodes related to an initial group of nodes for the 
+ * transfer service.
+ * <p>
+ * During the crawl method the node finders find nodes related to the staring nodes 
+ * and then the filters can exclude unwanted nodes.   For example you could use the finders 
+ * to walk down a tree of nodes and exclude nodes of a certain type.  
+ * 
+ * @see org.alfresco.repo.transfer.StandardNodeCrawlerImpl
+ *
+ * @author Brian 
+ */
 public interface NodeCrawler
 {
-
     public abstract Set<NodeRef> crawl(NodeRef... nodes);
 
     public abstract Set<NodeRef> crawl(Set<NodeRef> startingNodes);