Tree (unittests)

- Moved import

source/niknaks/containers.d

@@ -19,6 +19,16 @@ version(unittest)
     import std.stdio : writeln;
 }
 
+version(unittest)
+{
+    import std.functional : toDelegate;
+
+    private void DebugTouch(T)(Tree!(T) node)
+    {
+        writeln("Touching tree node ", node);
+    }
+}
+
 /** 
  * Represents an entry of
  * some value of type `V`
@@ -820,18 +830,9 @@ public class Tree(T)
     }
 }
 
-
-version(unittest)
-{
-    import std.functional : toDelegate;
-    import std.stdio : writeln;
-
-    private void DebugTouch(T)(Tree!(T) node)
-    {
-        writeln("Touching tree node ", node);
-    }
-}
-
+/**
+ * Test out usage of the tree
+ */
 unittest
 {
     Tree!(string) treeOfStrings = new Tree!(string)("Top");