--- a/src/treecms/api/NodeChildren.java	Mon Jun 06 21:49:04 2011 +0900
+++ b/src/treecms/api/NodeChildren.java	Tue Jun 07 16:42:49 2011 +0900
@@ -3,22 +3,16 @@
 import java.util.List;
 import java.util.Set;
 
-public interface NodeChildren<T extends NodeContext & NodeChildren<T>>
+public interface NodeChildren<T extends NodeContext & NodeAttributes & NodeChildren<T>>
 {
 	public List<T> getList();
-	
-	public boolean add(T _child);
-	public boolean addAll(NodeChildren<T> _list);
+	public T create(NodeAttributes _attr);
 	public Set<String> getFamilyIDSet();
-	
 	public T get(String _uuid);
 	public T get(int _index);
 	public T remove(String _uuid);
 	public T remove(int _index);
-	public T replace(T _new);
-	
 	public boolean contains(NodeID _id);
 	public boolean swap(String _uuid,String _uuid2);
-	
 	public void clearChildren();
 }