 	import weavejs.api.data.IKeySet;
 	import weavejs.api.data.IPrimitiveColumn;
 	import weavejs.api.data.IQualifiedKey;
+	import weavejs.api.data.IWeaveTreeNode;
 	import weavejs.data.column.DynamicColumn;
 	import weavejs.data.column.ExtendedDynamicColumn;
 	import weavejs.data.column.ReferencedColumn;

	import weavejs.geom.Point;
	import weavejs.util.ArrayUtils;
	import weavejs.util.JS;
	import weavejs.util.StandardLib;
	
	/**
	 * This class contains static functions that access values from IAttributeColumn objects.

			}
			return columnWrapper as DynamicColumn;
		}
		
		public static function hack_findHierarchyNode(columnWrapper:IColumnWrapper):IWeaveTreeNode
		{
			var dc:DynamicColumn = hack_findInternalDynamicColumn(columnWrapper);
			if (!dc)
				return null;
			var rc:ReferencedColumn = dc.target as ReferencedColumn;
			return rc ? rc.getHierarchyNode() : null;
		}

		/**
		 * Gets an array of QKey objects from <code>column</code> which meet the criteria
