update dumper

walker/walker.go

@@ -1,13 +1,15 @@
-package walker
+package walker // Node walking behavior
 
 // Walkable interface
+//
+// Every node must implement this interface
 type Walkable interface {
 	Walk(v Visitor)
 }
 
 // Visitor interface
 type Visitor interface {
-	EnterNode(w Walkable) bool             // EnterNode invoked for each node encountered by Walk.
-	GetChildrenVisitor(Key string) Visitor // GetChildrenVisitor returns visitor for children nodes
-	LeaveNode(w Walkable)                  // LeaveNode invoked after process node
+	EnterNode(w Walkable) bool             // EnterNode is invoked for each node encountered by Walk.
+	GetChildrenVisitor(Key string) Visitor // GetChildrenVisitor is invoked at every node parameter that contains children nodes
+	LeaveNode(w Walkable)                  // LeaveNode is invoked after process node
 }